Class 7 Science Biology Chapter 10 Test Paper Set-1 Pdf Download CBSE
Test Paper Of Class 7 Science Biology Chapter 10 Respiration In Organisms
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Chapter 10 Test Paper (01)
Class 7 Science Biology Chapter 10 Respiration In Organisms Test Paper Set-1 Text Form:-
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SAMPLE PAPER (01)
CLASS: 7 MAX.MARKS :30
SUBJECT: SCIENCE (Bio) TIME: 1:30 HOUR
CH: 10 (Respiration In Organisms)
General Instructions:
I. All questions are compulsory.
II. This question paper contains 18 questions divided into three Sections:- A, B, and C.
III. Section A has 10 questions of 1 mark each. Section B has 4 questions of 2 mark each and Section C has 4 questions of 3 mark each.
(Section – A)
In Questions 1 to 10, there are four options, out of which one is correct. Write the correct answer.
1. In cockroaches, air enters the body through.
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(i) lungs (ii) gills
(iii) spiracles (iv) skin
2. Which of the following is the main respiratory organ in humans?
A. Stomata B. Lungs
C. Heart D. None of the above
3. During the process of exhalation, the ribs move.
(a) down and inwards. (b) up and inwards.
(c) down and outwards. (d) up and outward.
4. The mountaineers carry oxygen with them because.
A. At an altitude of more than 5 km there is no air
B. The amount of air available to a person is less than that available on the ground.
C. The temperature of air is higher than that on the ground.
D. The pressure of air is higher than that on the ground.
5. Normal range of breathing rate per minute in an average adult person at rest is:
(i) 9–12 (ii) 15–18
(iii) 21–24 (iv) 30–33
6. During heavy exercise, we get cramps in the legs due to the accumulation of:
A. Carbon dioxide B. Lactic acid
C. Alcohol D. Water
7. Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?
(a) alcohol and lactic acid (b) alcohol and CO2
(c) lactic acid and CO2 (d) lactic acid only
8. Normal range of breathing rate per minute in an average adult person at rest is
A. 9-12 B. 15-18
C. 21-24 D. 30-33
9. Fish breathe with the help of gills which are richly supplied with blood vessels. The gills help the fish to.
(a) take in oxygen from air.
(b) take in oxygen dissolved in water.
(c) absorb nutrients present in water.
(d) release waste substances in water.
10. The air tubes of insect are called:
A. Trachea B. Spiracles
C. Stomata D. None of the above
(Section – B)
11. Mark the following statements as True or False. Correct the false statements.
(a) Oxygen breaks down glucose outside the cells of organisms.
(b) Frogs can breathe through their skin as well as lungs.
(c) Insects have spiracles on the lower surface of the body.
(d) Exhaled air has more percentage of CO2 than inhaled air.
12. Pick the odd-one-out from each of the groups given below on the basis of respiratory organs. Give reason for your answer.
(a) cockroach, grasshopper, snail, ant.
(b) lizard, cow, earthworm, snake.
(c) crocodile, whale, dolphin, fish.
(d) snake, tadpole, crow, goat.
13. On an average, an adult human being at rest breathes 15–18 times per minute. The breathing rate, however, may differ under different conditions. Arrange the following activities given in the box in order of increasing breathing rates and give reason for your answer.
(sleeping, cycling, brisk walk, watching T.V.)
14. Whenever we feel drowsy or sleepy, we start yawning. Does yawning help us in anyway?
(Section – C)
15. Paheli participated in a 400 m race competition held at her school and won the race. When she came home she had mixed feelings of joy and pain as she had cramps in her leg muscles. After a massage she was relieved of the pain. Answer the following questions related to the situation.
(a) What can be the possible reasons for the pain in her legs?
(b) Why did she feel comfortable after a massage?
16. Observe Figure carefully and answer the following questions.
(a) Which process is being tested in the activity?
(b) What is the result of the activity? Give reasons.
17. List the similarities and differences between aerobic and anaerobic respiration.
18. Observe the figures given as Figure (A) and (B) and answer the following. (a) Which of the figures A or B indicates the process of inhalation and which the process of exhalation?
(b) In the figure label the arrows and indicate the direction of
(i) movement of air
(ii) movement of diaphragm
(iii) movement of ribs
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