NCERT Exemplar for Class 7 Science Solutions Chapter 11 Transportation in Animals and Plants

Multiple Choice Questions

1. The muscular tube through which stored urine is passed out of the body is called –

(a) kidney

(b) ureter

(c) urethra

(d) urinary bladder

Ans: (c) Urethra

2. They are pipe-like, consisting of a group of specialized cells. They transport substances and form two-way traffic in plants. Which of the following terms qualify for the features mentioned above?

(a) Xylem tissue

(b) Vascular tissue

(c) Root hairs

(d) Phloem tissue

Ans: (d) Phloem Tissue

3. The absorption of nutrients and exchange of respiratory gases between blood and tissues takes place in –

(a) veins

(b) arteries

(c) heart

(d) capillaries

Ans: (d) capillaries 

4. In which of the following parts of human body are sweat glands absent?

(a) Scalp

(b) Armpits

(c) Lips

(d) Palms

Ans: (c) Lips

5. In a tall tree, which force is responsible for pulling water and minerals from the soil?

(a) Gravitational force

(b) Transportation force

(c) Suction force

(d) Conduction force

Ans: (c) Suction force

6. Aquatic animals like fish excrete their wastes in gaseous form as

(a) Oxygen

(b) Hydrogen

(c) Ammonia

(d) Nitrogen

Ans: (c) Ammonia

Very Short Answer Question

7. Veins have valves that allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direction only. Can you explain why?

Ans: In arteries, there are broad elastic valves. Atherosclerosis causes blood to flow swiftly and at high pressure through arteries. As a consequence, blood flows in one direction at all times.

8. What is the special feature present in a human heart which does not allow the mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?

Ans: The human heart is a muscular organ. It has a four-chambered design (two ventricles and two atria). As a result, when the blood reaches the heart, carbon dioxide-rich blood would not combine with oxygen-rich blood.

9. Name the organ which is located in the chest cavity with its lower tip slightly tilted towards the left.

Ans: The organ's name is 'Heart.' The human 'Circulatory System' uses heat as a key blood-pumping organ.

Short Answer Questions

10. Look at Figure 11.1. Draw another figure of the same set-up as would be observed after a few hours.

Ans: After a few hours, the level of sugar solution has increased while the quantity of water has reduced. This indicates that the solution has absorbed water from the beaker.

11. Arrange the following statements in the correct order in which they occur during the formation and removal of urine in human beings.

a) Ureters carry urine to the urinary bladder.

b) Wastes dissolved in water are filtered out as urine in the kidneys.

c) Urine stored in urinary bladder is passed out through the urinary opening at the end of the urethra.

d) Blood containing useful and harmful substances reaches the kidneys for filtration.

e) Useful substances are absorbed back into the blood. 

Ans: The arranged statements are:

1-(d) Blood containing useful and harmful substances reaches the kidneys for filtration.

2-(e) Useful substances are absorbed back into the blood.

3-(b) Wastes dissolved in water are filtered out as urine in the kidneys.

4-(a) Ureters carry urine to the urinary bladder.

5-(c) Urine stored in the urinary bladder is passed out through the urinary opening at the end of the urethra.

12. Paheli uprooted a rose plant from the soil. Most of the root tips, with root hairs, got left behind in the soil. She planted it in a pot with new soil and watered it regularly. Will the plant grow or die? Give a reason for your answer. 

Ans: The probable explanations are:-

a) The plant will perish because the root will be unable to absorb nutrients and water without the root hairs. Also, because the rose plant is being transplanted to new soil.

b) The rose plant will survive since the stem can sprout into new plants.

13. (a) Name the only artery that carries carbon dioxide-rich blood.

Ans: Pulmonary artery

(b) Why is it called an artery if it does not carry oxygen-rich blood? 

Ans: It is responsible for transporting blood away from the heart. As a result, it is known as an artery.

14. Boojho’s uncle was hospitalized and put on dialysis after a severe infection in both of his kidneys.

(a) What is dialysis?

Ans: Dialysis is the process of filtering blood on a regular basis using an artificial kidney.

(b) When does it become necessary to take such a treatment?

Ans: When the kidneys fail, dialysis fulfills the function of the kidneys.

15. Name the process and the organ which helps in removing the following wastes from the body.

a) Carbon dioxide

b) Undigested food

c) Urine

d) Sweat

Ans: The arranged table is:

16. Observe Figure 11.2 and answer the given questions:

(a) Name the instrument.

Ans: The name of the instrument is ‘Stethoscope’.

(b) Label the parts A, B, and C

Ans: Labelled figure-

17. Paheli noticed water being pulled up by a motor pump to an overhead tank of a five-storeyed building. She wondered how water moves up to great heights in the tall trees standing next to the building. Can you tell why?

Ans: The soil's minerals and water are constantly absorbed by the roots. Evaporation of water from leaves creates the suction force. It aids with the upward movement of water and can reach enormous heights in tall trees.

Long Answer Questions

18. Match the parts of the heart in Column I with the direction of the flow of blood in Column II.

Ans: 

19. Read the following terms given below.

root, hairs, xylem, urethra, arteries, kidneys, veins, atria, capillaries, heart, ureter, phloem, urinary, bladder.

Group the terms on the basis of the categories given below.

(a) Circulatory system of animals.

Ans: Arteries, atria, capillaries, veins, heart are the circulatory systems of animals.

(b) Excretory system in humans.

Ans: Urethra, kidneys, ureter, and urinary bladder are excretory systems in humans. 

(c) Transport of substances in plants.

Ans: Root hairs, xylem, and phloem are the transport of substances in plants.

20. Fill in the blanks of the following paragraph using just two words – arteries and veins.

(a)_______ carry oxygen-rich blood from the heart to all parts of the body and ___ 

Ans: Arteries

(b)___ carry carbon dioxide-rich blood from all parts of the body back to the heart. 

Ans: Veins

(c)___ have thin walls and __ 

Ans: Veins

(d)___ have thick elastic walls. Blood flows at high pressure in ___ 

Ans: Arteries

(e)____. Valves are present in __ 

Ans: Arteries

(f) ___ which allow blood to flow only towards the heart. __ 

Ans: Veins

(g)___ divide into smaller vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form ____ 

Ans: Arteries

(h)_____.

Ans: Veins

21. While learning to ride a bicycle Boojho lost his balance and fell. He got bruises on his knees and it started bleeding. However, the bleeding stopped after some time.

(a) Why did the bleeding stop?

Ans: After a while, the bleeding ceased due to the formation of blood clots.

(b) What would be the colour of the wounded area and why?

Ans: The colour of a wound is dark crimson. This is due to the fact that blood clots.

(c) Which type of blood cells is responsible for the clotting of blood?

Ans: Platelets are the cells that cause blood to coagulate.

About NCERT Exemplar Science for Chapter 11 Transportation in Animals

NCERT stands for the National Council of Educational Research and Training and it was formed in 1961 by the Government of India. The purpose of the NCERT was to have one body oversee the process of education for the central board. Thus, by merging seven older bodies into one, the NCERT was created and tasked with the creation of a national syllabus, textbooks, and workbooks for the same, and an exam pattern for the same.

One of the workbook series created by the NCERT was named the NCERT Exemplar. This series was divided into different subjects for each year. The workbooks did not have any reading material since that was already covered in the textbooks. Instead, the Exemplar workbooks contained a series of higher-end questions based on the relevant subject and year. The NCERT Exemplar Science workbook is one such series that has questions based on the Science syllabus.

Benefits of downloading Class 7 NCERT Exemplar Science Chapter 11 Solutions

The Class 7 NCERT Exemplar Science Chapter 11 Solutions have been created by Vedantu to help you learn how to apply the concepts you learn from your textbooks. These questions are of a higher level than the ones found in the corresponding chapter of your textbook, so it's useful for assessing your understanding of the subject. By using the solutions given as a guide, you can improve your understanding of the subject.