Factors Required for Making Food in Plants

Q.

${\mathrm{CO}}_2$ and ${\mathrm{O}}_2$ balance in atmosphere are due to______.

1. Respiration

2. Leaf anatomy

3. Photosynthesis

4. Photorespiration

Q.

Carbon dioxide is needed by plants to make their ______.

Q.

The gas released during photosynthesis is _____ (oxygen/carbon dioxide)

Q.

Which gas is released during photosynthesis?

1. Nitrogen

2. Oxygen

3. Carbon dioxide

4. Water vapour

Q. Give reason: Bacteria are also known as natures scavengers.

Q. Which of the following are required by plants to prepare their food?

1. Water
2. Carbon dioxide
3. Oxygen
4. Sunlight