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Respiration in Organisms (Class VII)

Respiration in Organisms

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

During the process of oxidation, oxygen combines with the food we eat, liberating

  1. energy and nitrogen
  2. nitrogen and carbon dioxide
  3. carbon dioxide and urea
  4. urea and energy
  5. energy and carbon dioxide
Question 2 Multiple Choice (Single Answer)

Which of the following is not a part of human respiratory system?

  1. Lungs
  2. Diaphragm
  3. Bronchi
  4. Nasal cavity
  5. Wind pipe
Question 3 Multiple Choice (Single Answer)

In humans, a voice box called larynx is located

  1. at the entrance of nasal passage
  2. on the diaphragm
  3. in the ribs
  4. at the entrance of lungs
  5. at the entrance of trachea
Question 4 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Energy is needed by living as well as non-living things to work.
b. The digested food is absorbed by the walls of intestine and carried by blood to different parts of the body.
c. The lungs get rid of the nitrogen gas as one breathes out.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 5 Multiple Choice (Single Answer)

Which of the following is/are the characteristics of respiration?

a. Energy is produced.
b. Food is used up.
c. Exchange of gases occur.

  1. only a
  2. only a and b
  3. only b
  4. only b and c
  5. a, b and c
Question 6 Multiple Choice (Single Answer)

Which of the following has very thin walls and are supplied with blood capillaries?

  1. Trachea
  2. Bronchus
  3. Diaphragm
  4. Alveoli
  5. Bronchiole
Question 7 Multiple Choice (Single Answer)

In exhaled air, the percentage of carbon dioxide is

  1. 4.4%
  2. 16.4%
  3. 21%
  4. 0.04%
  5. 28%
Question 8 Multiple Choice (Single Answer)

Heavy weightlifters develop muscle cramps after heavy exercise. This is due to the accumulation of _________ in the muscles.

  1. malic acid
  2. oxalic acid
  3. citric acid
  4. lactic acid
  5. acetic acid
Question 9 Multiple Choice (Single Answer)

In which of the following organisms is the movement of skeleton draws air in and out of the openings called spiracles?

  1. Amoeba
  2. Frog
  3. Fish
  4. Cockroach
  5. Earthworm
Question 10 Multiple Choice (Single Answer)

The number of times a person breathes in a minute is called the breathing rate. The normal range of breathing rate/minute in an adult person at rest is

  1. 15 - 18 times
  2. 10 - 12 times
  3. up to 25 times
  4. 5 - 7 times
  5. 8 - 10 times
Question 11 Multiple Choice (Single Answer)

Which of the following organisms, when in water, breathes through their moist skin and when in water, breathes through their nostrils?

  1. Earthworm
  2. Cockroach
  3. Amoeba
  4. Hydra
  5. Frog
Question 12 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Yeast is a single-celled organism that respires aerobically.
b. In anaerobic respiration, glucose is partially broken down into ethyl alcohol, energy and carbon dioxide.
c. Cellular respiration is a chemical process in which food molecules are broken down into simple molecules within cells and energy is produced.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 13 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. During exhalation, the ribs move downwards and inwards.
b. During inhalation, the diaphragm moves up, making the chest cavity larger.
c. From trachea, the air goes through two smaller tubes called bronchi.

  1. Only a
  2. Only a and b
  3. Only b
  4. Only b and c
  5. Only c
Question 14 Multiple Choice (Single Answer)

In aquatic plants, gases diffuse through the

  1. lenticels
  2. body surface
  3. stomata
  4. general surface of the roots
  5. guard cells
Question 15 Multiple Choice (Single Answer)

In terrestrial plants, diffusion of oxygen and carbon dioxide occurs through which of the following?

a. Anther
b. Stomata
c. Lenticels
d. Sepals

  1. Only a and b
  2. Only a and c
  3. Only a and d
  4. Only b and c
  5. Only b and d
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