Answer: Option B. -> Decreases 
:
B
When the quantityof water in the soil is increased beyond a certain limit, it results in poor aeration of soil. This retards the metabolic activities of root cells, decreasingrespiration, hence, the rate of water absorption also decreases. And the magnitude of root pressure is dependent on the rate of water absorption.

Answer: Option A. -> Open stomata, high intensity of light and well irrigated soil
:
A
It is essential that stomata is open for transpiration to occur. But for the stomata to remain in an open state, light is essential, because light plays a role in the accumulation of potassium ions in the guard cell, which ensures that the guard cells remain turgid and thus maintaining stomata in the open state. Humidity is a also a factor that affects transpiration. High humidity means high water vapor content in the atmosphere and when atmosphere is saturated with water vapor, it does not vaporize easily through transpiration.

Answer: Option A. -> A - 3, B - 5, C - 4, D - 1, E - 2
:
A
Carrier proteins are highly specific thus allow only selective molecules to pass through them. Aquaporins form water channels which allow only water to pass through. Some of the carrier proteins are uniporters which transport only one molecule, symporters transport two molecules in the same direction, antiporters transport two molecules in opposite direction and pumps use energy to transport substances.

Answer: Option A. -> Plasmolysis
:
A
When a cell is placed in hypertonic solution, it shrivels up and shrinks due to exosmosis. This process is called plasmolysis.