Biology
When guard cells are flaccid, the stoma must be:
- Open
- Neither open nor closed
- Closed
- None of these
Related Questions
Transpiration is significant for all except:
- Cooling effect
- Suction pull
- Ascent of sap
- Translocation of food
Hydathodes are located on:
- At the petiole
- Upper surface of leaves
- Lower surface of leaves
- Margins of leaves
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.
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.