The raw material which is reduced during photosynthesis is :

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

The optimum temperature for the process of photosynthesis is :

1. 53°C
2. 45°C
3. 25°C
4. 35°C

Assertion (A): Photosynthesis occurs in all parts of a green plant.

Reason (R): Chlorophyll is the green pigment which traps solar energy during daytime.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.

Assertion (A): Guard cells regulate the opening and closing of the stomatal aperture.

Reason (R): Guard cells contain chloroplasts and are mostly located on the lower surface of the leaves. Other cells of the lower epidermis do not contain chloroplasts.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.