Respiration in Organisms Sample Questions for Class 7
Question 1
Which of the following is a correct match for organism and organ used for respiration?
A. Amoeba - Cell Membrane
B. Earthworm - Spiracles
C. Grasshopper - Nostrils
D. Tadpole - Lungs
Question 2
During which process is energy released?
A. Cellular respiration
B. Breathing
C. External respiration
D. Inhalation
Question 3
Why is yeast in used in making of cake?
A. It gives out energy during respiration making cake spongy
B. It gives out lots of CO2 during respiration making cake fluffy
C. It produces alcohol making cake tasty
D. None of the above
Question 4
Which of the following is correct statement?
A. During inhalation oxygen is 21% and CO2 is 0.04%
B. During inhalation oxygen is 16.4% and CO2 is 4.4%
C. During exhalation oxygen is 16.4% and CO2 is 0.04%
D. During exhalation oxygen is 21% and CO2 is 4.4%
Question 5
During respiration CO2 gas is released how can it be checked?
A. Passing it through calcium hydroxide
B. Passing through it potassium hydroxide
C. Passing it through magnesium hydroxide
D. Passing it through iron hydroxide