Question

State whether the following statements are true or false. If false, correct them.

(a) Plants consume oxygen for respiration.

(b) Plants produce oxygen during the process of making their own food.

(c) Air helps in the movements of sailing yachts and gliders but plays no role in the flight of birds and airplanes.

(d) Air does not occupy any space.

Answer 1

(a) In plants, during respiration oxygen is consumed by plants, and the release of carbon dioxide takes place.

(b) Photosynthesis:

1. The process where plants make their own food is known as photosynthesis.
2. During this process, plants absorb carbon dioxide and release oxygen as a by-product.

(c) Air:

1. Air is a mixture of gases that are present in the atmosphere.
2. Air helps to move sailing yachts and gliders.
3. It also helps in the flight of birds and airplanes by creating air pressure.

(d) The air is invisible but it is present everywhere. Thus, the air is occupied space.

Final Answer:

(a) The given statement is true.

(b) The given statement is true.

(c) The given statement is false.

(d) The given statement is false.