Important Questions for CBSE Class 6 Science Chapter 9 - The Living Organisms and Their Surroundings

Very Short Answer Questions:                                                                    1 Mark

Define the following:

1. Habitat

Ans: An organism's habitat is its place of residence. Food, water, shelter, air, and other necessities of life are all provided by habitat. Many creatures can coexist in the same environment. Aquatic habitats for fish, for example, include ponds, rivers, and the sea.

2. Adaptation

Ans: Adaptation is defined as the presence of particular characteristics or characteristics that enable an organism to thrive in its environment. Adaptations vary from animal to animal. A fish, for example, has gills that allow it to breathe underwater.

3. Saline

Ans: A saline solution is a salt-water solution. Water present in sea or ocean are saline in nature. Marine species have evolved to thrive in a salty environment.

4. Biotic Component

Ans: Biotic components are the living organisms that make up an ecosystem. Plants, animals, microbes, and other biotic components make up the biotic components. As predators and prey, they interact with one another. They also have interactions with abiotic elements.

5. Abiotic Component

Ans: The non-living things in the environment are referred to as abiotic components. They determine the habitat's characteristics. The abiotic components of an environment are sunlight, rainfall, wind, soil, and so on. They have interactions with the biotic elements.

6. Germination

Ans: The process through which a sapling arises from a seed under ideal conditions is known as germination. Seed is a dormant, dry structure that can withstand harsh conditions. Seed germinates to generate the sapling that will give life to the new plant only when the conditions are favourable.

7. Prey

Ans: The term "prey" refers to a creature that is consumed by another one. Deer, for example, are prey for lions, and snakes are prey for eagles.

8. Predator

Ans: Predators are organisms that consume other organisms. A lion, for example, is a deer predator, while an eagle is a snake predator, and so on.

9. Stimulus

Ans: The term "stimulus" refers to any change in the environment that causes an organism to respond. The ability to respond to stimuli is a key feature of living organisms. Change of temperature, wind patterns, lighting, and other stimuli are examples of stimuli.

10. Respiration

Ans: The intake of oxygen from the outside environment to the cells within tissues, as well as the removal of carbon dioxide in the reverse direction, is referred to as respiration. Depending on the presence or lack of oxygen, it might be aerobic or anaerobic. To obtain energy, organisms breathe.

Short Answer Questions:                                                                                                3 Marks

11. How is a camel adapted to its habitat?

Ans: Camels are desert animals that have adapted to the harsh conditions of the desert, such as high temperatures and scarcity of water. Camel's long legs protect its body from the scorching sand. They have large hooves that make it easy for them to walk on sand. Camels must store as much bodily water as possible in deserts because there is less water. They do so by excreting urine and dry dung in little volumes. They also include a hump that can be used to store food reserves. This enables them to live in deserts for extended periods of time.

12. How do dolphins and whales breathe?

Ans: Although dolphins and whales are aquatic creatures, they lack gills. Their lungs are linked to a blowhole. Blowholes are comparable to nostrils on the top of a person's head. When they swim close to the surface or come up for air, they use these blowholes to breathe. They can go for lengthy periods of time without breathing in water. They rise from the water when they need to breathe.

13. What are the different kinds of habitats?

Ans: Habitats are areas where animals can live. Terrestrial habitats and aquatic habitats are the two main forms of habitat. Terrestrial habitats are habitats that are found on the ground. Tropical rainforests, grasslands, deserts, mountains, and other terrestrial ecosystems are some of the most prevalent. Aquatic habitats are found in bodies of water. Ponds, lakes, rivers, seas, and oceans are examples of common aquatic ecosystems. Diverse environments have different abiotic components. The nature of biotic components is determined by these abiotic components.

14. Explain the adaptations of a fish.

Ans: Fish are aquatic creatures and live under water. Fish have several significant adaptations to survive under water: 

1. They have a streamlined physique that makes it easier for them to swim.

2. They have gills that assist them in absorbing dissolved oxygen from the water.

3. They swim with fins and tails to assist them maintain balance and control directions in the water.

4. They have slick scales that protect the body while also assisting in swimming.

15. What is excretion? How do plants excrete?

Ans: The process of excretion is the removal of nitrogenous waste from the body. As a result of numerous metabolic activities in the body, wastes are created. These wastes are harmful to the organism and must be removed. Plants excrete in a variety of ways:

1. Resins and saps are excreted as wastes.

2. They may also store wastes in their bodies away from important activities, ensuring that the wastes do not harm the plants.

3. The roots discharge some wastes as well.

Long Answer Questions:                                                                                            5 Marks

16. Compare the adaptations of a desert plant with a mountain plant?

Ans: Differences between desert and mountain plants are as follows:

17. Compare the adaptations of animals in grasslands to those in mountains.

Ans: Differences between adaptation of grassland and mountain animals are as follows:

18. How do you characterize a living thing?

Ans: Anything that has life is called living things. The following are some of the characteristics that distinguish a living thing: 

1. All living creatures require food and nutrients to survive.

2. To receive energy from food, all living creatures breathe.

3. All living things are in the process of growing.

4. Stimuli affect all living things.

5. All living things discharge waste from their bodies.

6. All living things reproduce to generate offspring.

7. All living things have substance mobility in their bodies.