Biology
Assertion (A): Photosynthesis occurs in all parts of a green plant.
Reason (R): Chlorophyll is the green pigment which traps solar energy during daytime.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Answer
A is False and R is True.
Explanation
Photosynthesis only occurs in green parts of the plant. For example, roots and non-green tissues do not perform photosynthesis.
Chlorophyll is the pigment responsible for absorbing light energy from the sun, which is then used to drive the process of photosynthesis.
Related Questions
Assertion (A): Nerium leaves have sunken stomata covered by trichomes.
Reason (R): Nerium is a hydrophytic plant which gets rid of excessive water through the process of transpiration.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion (A): Transpiration helps in the descent of sap by producing a suction force acting from the top of a plant.
Reason (R): Transpiration is the evaporative loss of water through the aerial parts (leaves, stems) of a plant. However, this loss holds much significance for the plant.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- 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.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.
Assertion (A): Palisade cells of mesophyll are loosely arranged towards the lower epidermis of a dorsiventral leaf.
Reason (R): Palisade cells contain the maximum amount of chlorophyll, trap solar energy and help in the process of photosynthesis.
- Both A and R are True
- Both A and R are False
- A is True and R is False.
- A is False and R is True.