Biology
Assertion. Lenticels allow diffusion of gases for respiration.
Reason. Lenticels are located on the surface of older woody stems. They close during night time and open during the day for 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.
Related Questions
Assertion. Translocation of prepared food material in plants always occurs through the phloem tissue in an upward direction.
Reason. Phloem is a kind of a complex permanent tissue in plants which surrounds the xylem tissue. It is present all throughout the plant-root, stem or leaves.
- 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. Active transport does not occur through a non-living semi-permeable membrane.
Reason. Active transport is in a direction opposite to that of diffusion, i.e., from a region of lower concentration to higher concentration.
- 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. Transpiration decreases the amount of moisture in the atmosphere.
Reason. Forests contribute in bringing rain because 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. Nerium leaves have sunken stomata covered by trichomes.
Reason. 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.