NCERT Class VII Science Solutions: Chapter 10-Respiration in Organisms Part 1 (For CBSE, ICSE, IAS, NET, NRA 2023)
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MULTIPLE CHOICE QUESTIONS
Question 1:
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?
- Alcohol and lactic acid
- Alcohol and
- Lactic acid and
- Lactic acid only
Answer: D
Question 2:
Yeast is used in wine and beer industries because it respires
- Aerobically producing oxygen.
- Aerobically producing alcohol.
- Anaerobically producing alcohol.
- Anaerobically producing .
Answer: C
Question 3:
During the process of exhalation, the ribs move
- Down and inwards.
- Up and inwards.
- Down and outwards.
- Up and outward.
Answer: A
Question 4:
Breathing is a process that
- Provides to the body.
- Breaks down food to release energy.
- Helps the body to get rid of .
- Produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
- (i) and (ii)
- (ii) and (iii)
- (i) and (iii)
- (ii) and (iv)
Answer: C
Question 5:
Fish breathe with the help of gills which are richly supplied with blood vessels. The gills help the fish to ′
- Take in oxygen from air.
- Take in oxygen dissolved in water.
- Absorb nutrients present in water.
- Release waste substances in water.
Answer: B
Question 6:
Earthworms and frogs breathe through their skin because of which the skin of both the organisms is
- Moist and rough.
- Dry and rough.
- Dry and slimy.
- Moist and slimy.
Answer: D