Question

The process of breathing in air is called inspiration and that of breathing out air is called expiration. The number of times we breathe in and breathe out air in a minute is called respiration rate. Skin, gills, trachea, and lungs are the respiratory organs in animals and stomata and lenticels help in exchange of gases in plants.

1. What is respiration rate ?

2. What is expiration ?

3. Name the respiratory organ in earth worm.

4. What is the use of lenticels in plant ?

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Answer 1

Answer:

1. the number of times we breathe in and breathe out air in a minute is called respiration rate.

2. breathing out air is known as expiration.

3. respiratory organ of earthworm is skin

4. lenticels help in exchange of gases in plant

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