Question

Tick (√) the correct option.

1. Which of the following turns lime water milky?
(a) Oxygen
(b) Carbon dioxide
(c) Sulphur dioxide
(d) Hydrogen peroxide

2. Energy is needed for
(a) movement
(b) building up large molecules
(c) oxidation of glucose
(d) all of the above

3. Lungs are full of tiny air spaces called
(a) alveoli
(b) trachea
(c) bronchi
(d) bronchioles

4. Normal range of breathing rate per minute in an adult person at rest is
(a)10-13
(b) 15-18
(c) 21-24
(d) 30-33

5. Which of the following gas is exhaled when we breathe?
(a) Oxygen
(b) Carbon dioxide
(c) Hydrogen
(d) None of these

6. Oxidation of glucose inside the cell is called
(a) photosynthesis
(b) transpiration
(c) burning
(d) respiration

7. Respiration which does not use oxygen is called
(a) oxidation
(b) pigmentation
(c) anaerobic respiration
(d) none of these
​

Answer 1

1. oxygen
2. all of the about
3. trachea
4. 21-24
5. hydrogen
6. burning
7. none of these

Answer 2

1. Carbon dioxide
2. Movement
3. Alveoli
4. 15 - 18
5. Carbon dioxide
6. Glycolysis
7. Anaerobic respiration

I hope this will help you dear..

Always stay safe and stay healthy..