Respiration in Organisms MCQ Questions and Answers for Practice

1. The process of breakdown of food in the cell with the release of energy is called

1. Respiration
2. Inhalation
3. Exhalation
4. Breathing

2. Giving out of air rich in carbon dioxide is called ....................

1. Inhalation
2. Respiration
3. Breathing
4. Exhalation

3. Taking in air rich in oxygen into the body is called _________

1. Inhalation
2. Exhalation
3. Breathing
4. Respiration

4. An adult human being at rest breathes in and out for ................. times in a minute

1. 10-15
2. 15-18
3. 20-25
4. 50-60

5. To which disease is smoking linked ?

1. Appendicitis
2. Anaemia
3. Fever
4. Cancer

6. During exhalation the size of the chest cavity ............

1. Increases
2. Decreases
3. Remains the same
4. Get out of the lungs

7. During heavy exercise, we get cramps in the legs due to the accumulation of ............

1. Water
2. Alcohol
3. Carbon dioxide
4. Lactic acid

8. Name the organism that breathes through its lungs as well as its skin .............

1. Human being
2. Earthworm
3. Dog
4. Frog

9. In cockroaches, air enters the body through ........................

1. Spiracles
2. Gills
3. Lungs
4. Skin

10. Name the organism which breathes through its skin

1. Earthworm
2. Cat
3. Dog
4. Human beings

11. The air tubes that an insect has are useful for the exchange of ................

1. Solids
2. Liquids
3. Gases
4. No exchange

12. The small openings in the body of a cockroach are called ...............

1. Pores
2. Holes
3. Tracks
4. Spiracles

13. Name the gas which is used by white blood cells to kill the invading bacteria

1. Oxygen
2. Carbon Dioxide
3. Nitrogen
4. Chlorine

14. In earthworms, the exchange of gases occurs through

1. lungs
2. gills
3. moist skin
4. tracheae

15. In cockroach, air enters the body through

1. Lungs
2. Gills
3. Skin
4. Spiracles