Biology
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.
Answer
A is True and R is False.
Explanation
Nerium is adapted to dry environments and has sunken stomata and trichomes to reduce water loss. Nerium is not a hydrophytic plant (which lives in water-rich environments); it is actually a xerophytic plant adapted to arid conditions. The adaptations such as sunken stomata and trichomes help in minimizing water loss, not getting rid of excess water.
Related Questions
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.
Assertion. Transpiration helps in the descent of sap by producing a suction force acting from the top of a plant.
Reason. 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. Photosynthesis occurs in all parts of a green plant.
Reason. 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.