Lakhmir Singh Solutions for Class 7 Science Chapter 7 Weather, Climate And Adaptations of Animals to Climate - PDF

Very Short Answer Type Questions

1. What is the primary source of energy which causes changes in the weather?

Ans: The heat energy of the sun is the primary source of energy which causes changes in the weather.

2. Name any two activities of our daily life which are planned according to the weather on a day.

Ans: Two activities of our daily life which are planned according to the weather on a day are,

• We wear clothes according to the prevailing weather.

• We eat food depending on the weather.

3. What term is used to denote the amount of water vapour (or moisture) in air?

Ans: The amount of water vapour (or moisture) in the air is termed humidity.

4. Name the instrument used to measure the rainfall at a place.

Ans: The name of the instrument used to measure the rainfall at a place is the rain gauge.

5. Name the unit in which rainfall is measured.

Ans: The unit in which rainfall is measured in millimetres (mm).

6. Which of two changes frequently: weather or climate?

Ans: Weather changes more frequently than climate.

7. Name one state (or region) each in India having the following climates:

• (a) Very hot and wet.

• (b) Hot and dry.

• (c) Moderately hot and wet.

• (d) Wet.

Ans: 

(a) Kerala state has a very hot and wet climate.

(b) Rajasthan state has a hot and dry climate.

(c) Jammu and Kashmir have moderately hot and wet climates.

(d) The climate of North-East India is wet.

8. Name one state in India which has a typical tropical climate.

Ans: Kerala has a typical tropical climate.

9. Name one state in India which has a typical desert climate.

Ans: Rajasthan has a typical desert climate.

10. Name two animals which live in the polar regions of the earth.

Ans: Name of two animals which live in the polar regions are listed below:

• Polar bear.

• Penguins.

11. Name two animals (other than polar bears and penguins) which live in the polar regions of the earth.

Ans: Names of two animals other than polar bears and penguins which live in the polar regions are listed below:

• Reindeers.

• Arctic foxes.

12. Name a sea-bird which cannot fly.

Ans: Penguin is a sea bird which cannot fly.

13. Name two places in India where the migratory bird called ‘Siberian crane’ comes every year from Siberia.

Ans: Two places in India where the migratory bird called ‘Siberian crane’ comes every year are listed below:

• Bharatpur in Rajasthan.

• Sultanpur in Haryana.

14. Name any five types of animals which live in tropical rainforests.

Ans: Any five types of animals which live in tropical rainforests are listed below:

• Lions.

• Elephants.

• Monkeys.

• Gorillas.

• Snakes

15. Name two big cats.

Ans: Two big cats are listed below:

• Lions.

• Tigers.

16. Name the colourful bird having a long and large beak which lives in tropical rainforests.

Ans: The name of a colourful bird having a long and large beak which lives in tropical rainforests is Toucan.

17. What is the most outstanding feature of lion-tailed macaque?

Ans: The most outstanding feature of lion-tailed macaque is its silver-white ‘mane’ which surrounds its head from the cheeks down to its chin.

18. State whether the following statements are true or false:

• (a) Weather and climate are just the same.

• (b) Red-eyed frogs live in the water of a pond.

Ans: 

• (a) Weather and climate are two different things. Hence, the statement is false.

• (b) Red-eyed frogs live on the tree in the tropical rainforests. Hence, the statement is false.

19. The temperature at a place is high most of the time and there is also heavy rainfall on most of the days at the same place. What type of climate does this place have?

Ans: The temperature at a place is high most of the time and there is also heavy rainfall on most of the days at the same place. The climate of the place is hot and wet.

20. Fill in the following blanks with suitable words:

1. The average weather taken over a long time is called ________.

2. The state of the atmosphere at a given place and time is called ________.

3. A place receives very little rainfall and the temperature is high throughout the year, the climate of that place will be _______ and _________.

4. The two regions of the earth with extreme climate conditions are ________ and _________.

5. The days are ________ in winter rather than in summer.

6. Tropical rainforests are found in _________ Ghats and ________ in India.

Ans: 

1. The average weather pattern at a place taken over a long period of time (say, 25  years) is called the climate of that place.

            Hence, the average weather taken over a long time is called climate.

2. The day-to-day condition of the atmosphere at a place and time with respect to the elements of weather (such as temperature, pressure, etc.) is called weather at that place at that time.

Hence, the state of the atmosphere at a given place and time is called            weather.

3. A place receives very little rainfall, thus the place is dry. The temperature of the place is high, thus the place is hot.

Hence, if a place receives very little rainfall and the temperature is high throughout the year, the climate of that place will be hot and dry.

4. Polar regions have extremely cold climates, whereas tropical regions have very hot and humid climates.

Hence, the two regions of the earth with extreme climate conditions are polar regions and tropical regions.

5. During winter the sunrise is late but the sunset is early.

Hence, the days are smaller in winter than in summer.

6. In India, the Western Ghats and Assam have a tropical climate.

Hence, tropical rainforests are found in Western Ghats and Assam in India.

Short Answer Type Questions

21. When are the maximum and minimum temperatures likely to occur during the day?

Ans: The maximum temperature of the day generally occurs in the afternoon as the earth absorbs maximum heat in the afternoon and the minimum temperature of the day generally occurs in the early morning as the earth gets cooled down throughout the night.

22. Explain why, in summers we feel so miserable in the afternoon and comparatively comfortable in the early morning.

Ans: During summers, we feel miserable in the afternoon because the maximum temperature of the day is reached in the afternoon.

On the other hand, we feel comparatively cool and comfortable in the early morning during summers because the minimum temperature of the day is reached in the early morning.

23. What are the various types of information usually carried by the daily weather report in a newspaper?

Ans: The daily weather report carries information about the temperatures, humidity, and rainfall during the past 24 hours of a particular place. It also gives the timings of sunrise, sunset, moonrise and moonset. The weather report also predicts the weather for the day.

24. What is a rain gauge? For what purpose is it used?

Ans: Rain gauge is a measuring cylinder with a funnel at the top to collect rainwater. It is used to measure the rainfall of a particular place.

Rainfall is measured by an instrument called rain gauge. Rain gauge measures the rainfall at a place in the unit of millimetres (mm).

25. How have the animals living in polar regions adapted to the extremely cold climate?

Ans: The animals living in the polar regions have adapted to the extremely cold climate by having some special features such as white colour, a thick layer of fur, thick skin, a layer of fat under the skin, a strong sense of smell, and big feet or big paws for walking on soft snow and swimming.

26. A polar bear is white. How does the white colour help in the survival of polar bears in polar regions?

Ans: Due to their white colour, polar bears are not visible easily in the snowy white background and hence its prey is unable to see it, so prey is easy to catch. The white colour of polar bear also protects it from its predators because it mixes well with the snowy white surroundings.

27. State two important features of a polar bear which protect it from the extreme cold in showy surroundings.

Ans: Two important features of a polar bear which protect it from the extreme cold in showy surroundings are listed below:

• Polar bear has a thick layer of fat under its skin that insulates the body of the polar bear against heat loss and keeps it warm in cold climates.

• Polar bear has two thick layers of fur on its body that protects the polar bear from extreme cold by preventing the loss of heat from its body. 

28. A polar bear has two thick layers of fur and a layer of fat under the skin. How do these adaptations help the polar bear in its survival?

Ans: The two thick layers of fur and a layer of fat under the skin insulate the body of polar bear against heat loss and keeps it warm in cold climates. Thus, two thick layers of fur and a layer of fat under the skin protects the polar bear from extreme cold.

29. A polar bear has a very strong sense of smell. How does this help the polar bear in its survival?

Ans: Polar bears have a very strong sense of smell. The very strong sense of smell helps the polar bear in locating and catching its prey for food.

30. A polar bear has big feet (or big paws). What might be the advantages of this?

Ans: The big feet (or big paws) of a polar bear help to spread the weight of its body on snow which prevent it from sinking into snow and make it walk on snow easily. Polar bears have long, curved and sharp claws which help them to walk and run on slippery ice.

31. A polar bear is a good swimmer. How does this feature help the polar bear in its survival?

Ans: The big feet help the polar bear to swim well. Being a good and fast swimmer helps the polar bear to catch its prey (like seal) in water very easily. While swimming underwater, polar  bears can close their nostrils and remain underwater for long durations.

32. How do elephants living in the tropical rainforest adapt?

Ans: Elephant has adapted to the conditions of rainforests in many remarkable ways, such as:

• They have tusks  that are modified as teeth to tear bark of trees and fulfill their hunger.

• They have large ears that help keep them cool in hot and humid climates.

• Long ears help to hear very quiet sounds.

• They are very heavy.

33. What are tusks? How does an elephant make use of tusks for its survival?

Ans: Tusks are the big and long pointed teeth which come out from the closed mouth of the elephant. Tusks are the modified teeth of elephants.

Elephants use the tusks to tear off the bark of trees which it eats as food. They also use the tusks for fighting their enemies and protecting themselves.

34. An elephant has large ears. How do large ears help the elephant?

Ans: Due to large ears, an elephant can hear even the slightest sound made by its predator behind him so that it can sense the danger. Also, the large ears help the elephant to keep cool in the hot and hum  id climate of the tropical rainforest.

35. State the adaptation in a red-eyed frog which helps it to climb on trees on which it lives.

Ans: Red-eyed frog has developed sticky pads on its feet which help it to climb easily on the trees on which it lives. The sticky pads on feet also allow the red-eyed frog to attach itself to the branches and leaves of the trees.

36. A toucan has a long and large beak. How does this adaptation help toucan in its survival on trees?

Ans: Long and large beak is an adaptation in toucan for getting the otherwise unreachable fruits at the ends of very thin branches of tree. The large beak also helps in the temporary storage of fruits being collected by toucan.

37. How are monkeys adapted to live on trees?

Ans: The adaptations in monkeys which help them live and survive on the trees are,

• They are expert climbers.

• They have long and strong gripping tails which they use for grasping branches of trees.

• Monkeys have very good eyesight.

• They eat fruits, seeds, leaves, roots and insects as food.

38. What is the other name of lion-tailed macaque? Where does lion-tailed macaque live?

Ans: The lion-tailed macaque is also known as beard ape, due to its most outstanding feature silver-white mane, which surrounds its head from the cheeks down to its chin.

The lion-tailed macaque lives in the rainforests of western Ghats in India.

39. State the adaptations in lion-tailed macaque which help it to live and survive on trees in the tropical rainforests.

Ans: The adaptations in lion-tailed macaque which help it to live and survive on trees in the tropical rainforests are stated below:

• They are good climbers.

• They have very good eyesight which helps them in leaping between the branches.

• They mainly eat fruits on the trees.

40. How are penguins adapted to live and survive in polar regions?

Ans: The adaptations which help the penguins to live and survive in polar regions are listed below:

• They are black and white in colour but still it merges well with the white background of ice and show.

• Penguin has thick skin and a layer of fat below its skin which protects it from extreme cold.

• They live together in large numbers to keep themselves warm.

• They have streamlined bodies, flipper-like wings and webbed feet which make them a good swimmer.

41. State two features of a penguin which protect it from extreme cold in polar regions?

Ans: Two features of a penguin which protect it from extreme cold in polar regions are listed below:

• Penguin has thick skin and a layer of fat below its skin which protects it from extreme cold.

• They live together in large numbers to keep themselves warm.

42. Why do penguins huddle together?

Ans: If a large number of animals huddle in a large number, then the temperature of the surroundings increases due to the body temperature of the animals. Penguins huddle together so that the temperature of the surroundings increases, which is very much essential for their survival in the extremely cold climate of po  lar regions.

43. What are the various body features which make a penguin a good swimmer? How does being a good swimmer help a penguin?

Ans: The body features, which make a penguin a good swimmer, are listed below:

• Streamlined body.

• Flipper-like wings.

• Webbed feet.

Being a good swimmer helps the penguin in catching fish as prey.

44. What is meant by the migration of birds? Why do birds migrate?

Ans: The process in which a bird moves from one place to another in one season and returns again in a different season is called migration.

Birds migrate to escape the harsh and cold conditions of their normal habitat in winter so as to survive.

45. What are migratory birds? Name one migratory bird which visits warmer regions of India every year.

Ans: The birds which migrate from very cold regions to warmer regions in winter and go back after the winter is over, are called migratory birds.

One of the most common migratory birds which comes to India every year is the Siberian crane.

46. Describe the climate in tropical regions. Also name an important feature of the tropical regions.

Ans: The tropical region has generally a hot climate because of the location around the equator. The tropical regions get plenty of rainfall, this makes the region humid. The tropical regions have hot and humid climates.

An important feature of the tropical regions in the tropical rainforests.

47. Where are tropical rainforests found in India?

Ans: In India, tropical rainforests are found in Western Ghats and Assam.

48. State two conditions due to which tropical rainforests support a wide variety of plants and animals.

Ans: Due to the highly favourable climatic conditions, such as continuous warmth and rain, a large variety of plants and animals are found in tropical rainforests.

49. Why does Siberian crane come from Siberia to places like Bharatpur in Rajasthan every year for a few months?

Ans: Siberian crane comes from Siberia to places like Bharatpur in Rajasthan every year for a few months to escape the extremely cold winter conditions in Siberia and survive by moving to warmer regions.

50. State any two adaptations in big cats which help in their survival.

Ans: Two adaptations in big cats which help in their survival are stated below:

• The big cats have a highly developed sense of smell and sensitive hearing which helps them to locate their prey.

• The yellow-brown colour of lion and the yellow brown colour with black stripes of tiger help them to hide in the forest.

Long Answer Type Questions

51. What is meant by ‘weather’? Name the elements which determine the weather of a place.

Ans: The day-to-day condition of the atmosphere at a place and time with respect to the temperature, pressure, humidity, wind speed and wind direction, sunshine, clouds, rainfall or snowfall, etc., is called weather at that place at that time.

The elements which determine the weather are listed below:

• Temperature of the place.

• Pressure of the atmosphere.

• Humidity.

• Wind speed and wind direction.

• Sunshine or the length of the day.

• Amount of clouds.

• Rainfall or snowfall.

52. What produces weather? Why does the weather change so frequently?

Ans: Weather is produced by the heat of the sun and the effect it has on the atmosphere. The heat energy of the sun absorbed and reflected by the earth's surface, oceans and atmosphere, plays an important role in determining the weather at any place.

The heat of the sun causes water from the oceans and land to evaporate. These water vapours rise high up in the atmosphere, get cooled, condense and form clouds in the atmosphere which produce rain leading to ‘rainy’ weather. Similarly, heat from the sun heats the earth’s surface. The hot surface of earth heats the air near it and this hot and light air rises up creating an area of low pressure. Air from the high pressure area moves towards the low-pressure area that is known as wind and the weather is known as ‘windy weather’. Thus, the weather changes so frequently due to the various effects produced by the sun’s heat.

53. What is meant by ‘climate’? Explain with the help of an example. Name the four major types of climates.

Ans: The average weather pattern at a place taken over a long period of time (like, 25 years) is called the climate of that place.

For example, if the temperature at a place is high most of the time, then we say that the climate of that place is hot. And if there is also heavy rainfall on most of the days at that place, then we say that the climate of that place is hot and wet or hot and humid.

The four major types of climates are listed below:

• Polar climate.

• Temperature climate.

• Tropical climate.

• Desert climate.

54. State the factors which affect the climate of a place. What is the difference in the locations of Srinagar and Thiruvananthapuram? How do their climates differ?

Ans: The factors which affect the climate of a place are listed below:

• Temperature and rainfall.

• Altitude of a place also affects the climate of the place. A place at higher altitude will have a cooler climate than another place on planes.

• The location of the place with respect to the sea also affects the climate of the place. 

Srinagar is situated at high altitude on a mountain in the Northern part of India whereas Thiruvananthapuram is situated on plains at sea-level in the South-West part of India. Srinagar is located very far away from the sea and quite far away from the equator whereas Thiruvananthapuram is located near the sea and comparatively nearer to the equator.

Due to the totally different positions on earth, Srinagar and Thiruvananthapuram have entirely different climates. Such as,

• In Srinagar, the temperatures round the year are neither very low nor very high. Also, the rainfall is neither very low nor very high. Thus, Srinagar has a moderately hot and wet climate.

• In Thiruvananthapuram, the temperatures round the year are quite high. Also, the rainfall is very high. Thus, Thiruvananthapuram has a very hot and wet climate.

55. What are polar regions? Describe the climate in the polar regions of the earth. Name any five countries that belong to polar regions.

Ans: The areas situated near the poles (north pole and south pole) of the earth are called polar regions.

The polar regions of the earth have an extremely cold climate. The polar regions are covered with ice and snow. For six months, the sun does not set at the poles while for the next six months, the sun does not rise.

Names of any five countries that belongs to polar regions are listed below:

• Canada.

• Iceland.

• Norway.

• Sweden.

• Finland.

56. What is meant by “adaptations”? Explains with the help of an example. How is a polar bear adapted to live in extremely cold polar regions having snow all around?

Ans: The presence of specific body features or certain habits which enable an animal or a plant to live in a particular habitat or surroundings is called adaptations.

For example, polar bears have two thick layers of fur and a thick layer of fat under their skin, which are adaptations of polar bears to make them withstand the extremely cold climate of polar regions.

The adaptations of polar bears to live in extremely cold polar regions are listed below:

• Polar bears have white colour which matches with its snowy surroundings. This adaptation helps them to catch its prey and to protect themselves from the predators.

• Polar bears have two thick layers of fur and a thick layer of fat under their skin, which are adaptations of polar bears to make them withstand the extremely cold climate of polar regions.

• Polar bears have a rounded body and small ears to keep the body surface area to minimum. This reduces the heat loss from the body of the polar bear.

• Polar bear has big feet to spread the weight of its body on snow which prevents it from sinking into snow. They also have long, curved and sharp claws which help it to walk and run-on slippery ice.

57. 

1. What are tropical rainforests? Name any five countries where tropical rainforests are found.

2. Name some of the adaptations which help the animals live and survive in tropical rainforests.

Ans: 

1. The area of earth near both sides of the equator is called a tropical region. Due to highly favourable climatic conditions in tropical regions (such as continuous warmth and rain), a large variety of plants and animals are found in tropical regions. Thus, an important feature of the tropical regions of earth is the tropical rainforests.

The name of five countries, where tropical rainforests are found, are listed below:

• India.

• Brazil.

• Indonesia.

• Congo.

• Peru.

2. The adaptations which help the animals live and survive in tropical rainforests are stated below:

• A skin colour which helps them to mix up with the surroundings and hide in order to catch prey and protect themselves from predators.

• Running very fast.

• Development of trunk, tusks, and large ears and feet.

• Sharp eyesight.

• Sensitive hearing.

• Thick skin.

• Living on trees.

• Development of strong, gripping tails.

• Long and large beaks.

• Bright colours and lovely voice.

• Living on a diet of fruits.

58. 

1. Why do we find animals of certain kinds living in particular climatic conditions? Explain with examples.

2. Which of the following normally live in polar regions and which in tropical rainforests?

Elephant, Musk oxen, Reindeer, Lion-tailed macaque, Penguin, Toucan, Seal, Red-eyed frog, Siberian crane, Arctic fox.

Ans: 

1. Climate has a great effect on all living organisms. A living organism can survive in a particular habitat only if its body is suited to the climate of that habitat. Animals and plants develop special features in their body or develop certain habits to survive in their habitats. Due to that, we find animals of certain kinds living in particular climatic conditions.

For example, polar bears have two thick layers of fur and a thick layer of fat under their skin, which are adaptations of polar bears to make them withstand the extremely cold climate of polar regions.

2. The animals who live in polar regions and tropical region are listed below:

• Elephant – Tropical region.

• Musk oxen – Polar region.

• Reindeer – Polar region.

• Lion-tailed macaque – Tropical region.

• Penguin – Polar region.

• Toucan – Tropical region.

• Seal – Polar region.

• Red-eyed frog – Tropical region.

• Siberian crane – Polar region.

• Arctic fox – Polar region.

59. What is the difference between the weather and climate? Indicate the type of climate in the following areas:

(a) Jammu and Kashmir.

(b) Kerala.

(c) North-East India.

(d) Rajasthan

Ans: The day-to-day condition of the atmosphere at a place and time with respect to the elements of weather (such as temperature, pressure etc.) is called weather at that place at that time. The weather changes so frequently because the condition of the earth’s atmosphere keeps changing frequently due to the various effects produced by the sun’s heat. Whereas the average weather pattern at a place taken over a long period of time (say, 25 years) is called the climate of that place.

1. Jammu and Kashmir has a moderately hot and wet climate.

2. Kerala state has a very hot and wet climate.

3. The climate of North-East India is wet.

4. Rajasthan has a hot and dry climate.

60. 

1. How does the adaptation called ‘migration’ help the birds in their survival? Name one bird and one mammal which migrate seasonally.

2. An elephant has a long trunk. How does this adaptation help the elephant to live and survive in the tropical rainforest?

Ans: 

1. Migration of birds is an adaptation to escape the harsh and cold conditions of their normal habitat in winter so as to survive.

One bird, which migrates seasonally, is the Siberian crane.

One mammal, which migrates seasonally, is reindeer.

2. The trunk gives an elephant a strong sense of smell. The elephant uses its long trunk to pick up food and put it into its mouth. The trunk of the elephant can reach up to the branches of trees and help it eat tree leaves as food. They also use their trunk to drink water and bathe themselves.

Multiple Choice Questions (MCQs)

61. Which of the following options best describe a tropical region?

(a) hot and humid.

(b) moderate temperature, heavy rainfall.

(c) cold and humid.

(d) hot and dry.

Ans: The tropical region has generally a hot climate because of its location around the equator. The tropical regions get plenty of rainfall. Thus, the tropical regions have hot and humid climates.

Hence, (a) is the correct option.

62. A carnivore with stripes on its body moves very fast while catching its prey. It is likely to be found in:

(a) polar regions.

(b) deserts.

(c) oceans.

(d) tropical rainforests.

Ans: A carnivore with stripes on its body, which moves very fast while catching its prey, is likely to be found in tropical rainforests.

Hence, (d) is the correct option.

63. Which of the following features adapt polar bears to live in extremely cold climates?

(a) A white fur, Fat below skin, Keen sense of smell.

(b) Thin skin, large eyes, A white fur.

(c) A long tail, Strong claws, White large paws.

(d) White body, Paws for swimming, Gills for respiration.

Ans: A white fur, fat below skin, keen sense of smell are some adaptations that help polar bears to live in extremely cold climates.

Hence, (a) is the correct option.

64. Which of the following has a tropical climate?

(a) Kashmir.

(b) Kerala.

(c) Rajasthan.

(d) Assam.

Ans: Kerala state has a very hot and wet climate. Thus, Kerala has a tropical climate.

Hence, (b) is the correct option.

65. Which of the following is not a type of climate?

(a) polar climate.

(b) equator climate.

(c) desert climate.

(d) tropical climate.

Ans: Equator climate is not a type of climate.

Hence, (b) is the correct option.

66. If the ‘minimum’ and ‘maximum’ humidity values on four different days are as given below, which one is most likely to be a rainy day?

(a) 30%; 75%

(b) 43%; 96%

(c) 29%; 82%

(d) 26%; 84%

Ans: Humidity indicates the chances of rain in a particular area. More the humidity, the more chances of rain. Thus, the day with minimum humidity 43% and maximum humidity 96% is most likely to be a rainy day.

Hence, (b) is the correct option.  

67. The most outstanding feature of a lion-tailed macaque is its:

(a) silver-white mane.

(b) sticky pads on feet.

(c) long and large beak.

(d) ability to change colour.

Ans: The most outstanding feature of a lion-tailed macaque is its silver-white mane.

Hence, (a) is the correct option.

68. A climate which is neither very hot in summer nor very cold in winter is called:

(a) polar climate.

(b) desert climate.

(c) temperature climate.

(d) tropical climate.

Ans: A climate which is neither very hot in summer nor very cold in winter is called temperature climate.

Hence, (c) is the correct option. 

69. An animal which is adapted to get food from the fruits attached at the end of even very thin branches is:

(a) red-eyed frog.

(b) monkey.

(c) lion-tailed macaque.

(d) toucan.

Ans: An animal which is adapted to get food from the fruits attached at the end of even very thin branches is toucan.

Hence, (d) is the correct option.

70. Tropical climate is the one which is:

(a) Neither very hot nor very cold.

(b) Very hot and humid.

(c) It is very hot and dry.

(d) very cold and dry.

Ans: Tropical climate is very hot and humid.

Hence, (b) is the correct option.

71. The animal having sticky pads on its feet which help it to climb easily on tree is:

(a) toucan.

(b) red-eyed frog.

(c) Siberian crane.

(d) reindeer.

Ans: The animal having sticky pads on its feet which help it to climb easily on trees is a red-eyed frog.

Hence, (b) is the correct option.

72. If the region of a country is nearer to the equator, it will have a:

(a) temperature climate.

(b) polar climate.

(c) desert climate.

(d) tropical climate.

Ans: The climate of the region, which is nearer to the equator, is tropical.

Hence, (d) is the correct option.

73. The red-eyed frog lives:

(a) in ponds.

(b) on trees.

(c) in lakes.

(d) on mountains.

Ans: The red-eyed frog lives on trees.

Hence, (b) is the correct option.

74. The climate of an Indian state is said to be hot and humid. The state is likely to be:

(a) Rajasthan.

(b) Kerala.

(c) Kashmir.

(d) Haryana.

Ans: The climate, which is hot and humid, is known as a tropical climate. Kerala has a tropical climate.

Hence, (b) is the correct option.

75. Which of the following does not live in tropical rainforests?

(a) leopard.

(b) gorilla.

(c) reindeer.

(d) lizard.

Ans: Reindeer lives in polar regions not in tropical rainforests.

Hence, (c) is the correct option.

76. Which of the following countries does not have tropical rainforests?

(a) India.

(b) Brazil.

(c) Malaysia.

(d) Canada.

Ans: Canada does not have tropical rainforests.

Hence, (d) is the correct option.

77. One of the most common migratory birds which comes from Siberia is:

(a) crow.

(b) crane.

(c) toucan.

(d) parakeet.

Ans: One of the most common migratory birds which comes from Siberia is crane.

Hence, (b) is the correct option.

78. Which of the following have a thick layer of fat under the skin?

A. Parrot. B. Polar bear. C. Elephant. D. Penguin.

(a) A and B.

(b) B and C.

(c) A and D.

(d) B and D.

Ans: Polar bears and penguins have a thick layer of fat under the skin.

Hence, (d) is the correct option.

79. Which of the following does not live in polar regions?

(a) reindeers.

(b) seals.

(c) toucans.

(d) penguins.

Ans: Toucans live in tropical regions not in polar regions.

Hence, (c) is the correct option.

80. The mammal which is known to migrate seasonally in search of favourable climatic conditions and food is:

(a) Siberian crane.

(b) Reindeer.

(c) African elephant.

(d) Toucan.

Ans: The mammal which is known to migrate seasonally in search of favourable climatic conditions and food is Reindeer.

Hence, (b) is the correct option.

Questions Based on High Order Thinking Skills (HOTS)

81. Some of the adaptations in animals are given below:

1. White fur.

2. Diet heavy on fruits.

3. Strong tails.

4. Layer of fat under skin.

5. Big feet.

6. Sticky pads on feet.

7. Thick skin.

8. Strong sense of smell.

9. Need to migrate.

10. Long and large beak.

Which of these adaptations are:

1. for polar regions?

2. for tropical rainforests?

3. for polar regions as well as for tropical rainforests.

Ans:

1. For polar regions adaptations are: 

• (a) White fur.

• (d) Layer of fat under skin.

• (e) Big feet.

• (g) Thick skin.

• (h) Strong sense of smell.

• (i) Need to migrate.

2. For tropical rainforests adaptations are:

• (b) Diet heavy on fruits.

• (c) Strong tails.

• (f) Sticky pads on feet.

• (h) Strong sense of smell.

• (j) Long and large beak.

3. For polar regions as well as for tropical rainforests adaptations are:

• (h) Strong sense of smell.

82. The bird X moves from Siberia to places like Y in Rajasthan and Z in Haryana in India during a particular season. It stays in India for a few months and then goes back.

1. Name the bird X.

2. What are places (i) Y, and (ii) Z?

3. What general name is given to birds like X?

4. Name the season during which bird X moves from Siberia to India.

Ans: It is known that the bird Siberian crane moves from Siberia to places like Bharatpur in Rajasthan and Sultanpur in Haryana in India during a particular season. It stays in India for a few months and then goes back.

1. The name of the bird X is Siberian crane.

2. 
   

1. The place Y is Bharatpur.

2. The place Z is Sultanpur.

3. The birds like the Siberian crane are generally known as migratory birds.

4. The Siberian crane moves from Siberia to India during winter.

83. The animal P having white colour lives in the Arctic region whereas another animal Q having black and white colour lives in the Antarctic region. Both these animals have a thick layer of fat under the skin.

1. What could animals (i) P, and (ii) Q be?

2. In what type of surroundings do these animals live?

3. What is the function of the thick layer of fat under the skin of these animals?

4. Which of these animals could be called a bird?

Ans: Polar bears have white colour and live in the Arctic region whereas Penguins have black and white colour and live in the Antarctic region. Both these animals have a thick layer of fat under the skin.

1. The animal P could be Polar bears.

2. The animal Q could be Penguins.

2.  These animals live in polar regions, hence in cold and snowy surroundings.

3. Polar bears and Penguins have a thick layer of fat under the skin, which helps them to survive in the extremely cold climate of the polar regions.

4. Penguins could be called birds, but they cannot fly.

84. The two animals A and B are called big cats. The animal A has yellow-brown colour with black stripes whereas animal B has just yellow-brown colour.

1. What could animals (i) A, and (ii) B be?

2. Name the type of habitat where these animals usually live.

3. Where are the eyes of these animals located and what advantage do they confer to the animals?

4. State whether these animals are carnivores or herbivores.

Ans: Tiger has yellow-brown colour with black stripes whereas lion has just yellow-brown colour. They both are called big cats.

1. Animal A could be a tiger.

2. Animal B could be a lion.

2. Tiger and lion usually live in tropical rainforests.

3. The big cats have eyes in front of their head which enable them to have a correct idea of the location of their prey.

4. Tiger and lion are carnivores. 

85. The two animals X and Y live in tropical rainforests. The animal X is a kind which is adapted to obtain even those fruits from trees which are attached at the end of very thin branches. On the other hand, animal Y is a kind of frog which lives on trees. It has sticky pads on its feet so as to climb the trees.

1. What could X be?

2. Name the adaptation in X which helps it to obtain fruits even from the ends of very thin branches.

3. What could Y be?

4. Name an adaptation in Y which helps in its protection.

Ans: Toucan is an animal, which is adapted to obtain even those fruits from trees which are attached at the end of very thin branches. On the other hand, Red-eyed frog is a kind of frog which lives on trees and it has sticky pads on its feet so as to climb the trees. They both live in tropical rainforests.

1. X could be a bird called Toucan.

2. The long and large beak of Toucan is the adaptation, which helps it to obtain fruits even from the ends of very thin branches.

3. Y could be a frog called Red-eyed frog.

4. The green colour of Red-eyed frog helps it to hide within the green leaves of the tree unnoticed by its predators. Thus, this adaptation protects it.

Importance of Lakhmir Singh Class 7 Science Chapter 7 Weather, Climate And Adaptations of Animals to Climate

This chapter is important for the development of the concepts related to the influence of weather conditions in the evolution and adaptation of animals. It explains how animal species in a particular region develop certain features that help them to survive.

In this chapter, the fronts and conditions will be explained that define the weather of a place. These fronts include heat or temperature, humidity, wind, atmospheric pressure, rain or precipitation, cloudiness, visibility, etc.

It will also explain what the climate of a place means and how it can be defined using certain factors. It will then proceed to explain these factors that affect and decide the climatic condition of a place. Students of Class 7 will also learn what weather and climate mean and how they are different from each other.

The basic difference will be explained with proper examples so that the students can understand the difference well. They will learn how clouds are formed and what types of clouds exist. They will also learn about different weather phenomena. We can clearly understand how this chapter is important for the students of Class 7 to understand the climatic conditions and their effects on animal species.

Benefits of Lakhmir Singh Solutions for Class 7th Science Chapter 7

• The solutions and notes designed by the experts of Vedantu will help you to focus on the concepts explained in this chapter. You will be able to learn, memorise, and recall the concepts faster due to the simpler explanation given in these solutions.

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Download Lakhmir Singh Class 7th Science Ch 7 Notes and Solutions

Download the free PDF solutions for Lakhmir Singh Class 7 Science Chapter 7 Weather, Climate, And Adaptations of Animals to Climate for your exam preparation. Refer to the solutions PDF to know how the experts have explained the concepts in the answers to all exercise questions.