Question

Absorption of water by root is increased by
A. Increase in transpiration
B. Increase in the root of photosynthesis
C. Decrease in transpiration
D. Decrease in salt uptake

Answer 1

Absorption is the process of absorbing the substances into the cell or across the tissue and organs. It is done by osmosis or diffusion. Absorption in the skin is the way the substances can enter into the body. The water is released as the water vapor by the stomata of the plants, tiny pores on the surface of the area. It is the process of taking water at the root and releasing it as water vapor by the leaves.

Complete answer:
Option A: If the rate of transpiration increases then the rate of absorption by the roots will also increase. Rate of transpiration is affected by the amount of water up taken by the plants. If water is scarce or damaged then the transpiration and absorption rate will affect or reduce. Transpiration is also affected by the light intensity. Option A is correct.
Option B: Photosynthesis in the root is increased by the plant hormone which is called the cytokinin. If plants lose their shoots then this hormone is helped for the photosynthesis process. Photosynthesis increases when the roots are regenerated. In modified root chlorophyll is used for the photosynthesis process. Option B is incorrect.
Option C: If the surface is closed or it has a low pore like structure then the transpiration rate will be reduced. Water near the plant is diffused and enroots to the atmosphere. Humidity reduces the transpiration rate. Due to reduction in transpiration will reduce the water potential gradient inside and outside of the leaf. Option C is incorrect.
Option D: Plants are affected by the dissolved salt due to the water runoff. Salts which are present in the soil absorb the water. So it will reduce the water content in the plant. It may cause dehydration and increasing water stress. It is called the physiological drought. Option D is incorrect.Answer:

Therefore, Option A is the correct answer.

Note:
Transpiration pull is defined by the force produced by the inside of the plants called xylem tissue. This force is used for the upward movement of water in the inside of the xylem vessels. During this process water is lost as the water vapor by leaves. Root pressure is also called the osmotic pressure. Roots are getting or absorbing the important substances, chemicals, salts and ions from the soil and making them for their own use is called absorption.