Which of the following statements correctly describes water transport in plants?

Question

Question

This question was previously asked in

RRB Group D 14 Sept 2022 Shift 3 Official Paper

The process which is the main driving force of water into the xylem during the day is root pressure.
The process in which loss of water takes place in the form of water vapour through stomata is called transpiration.
The process of water loss from stomata requires energy in the form of ATP.
The process by which water is pulled from the xylem cells of the roots into leaves is called translocation.

Answer 1

The correct answer is The process in which loss of water takes place in the form of water vapor through stomata is called transpiration.

Key Points

The term "transpiration" refers to the process of removing surplus water from the plant's body. Water molecules in the plant tissues are removed from the aerial regions of the plants during transpiration.
Plants only use a small portion of the water they absorb for growth and development. The remainder is expelled through transpiration.90 % of excess water is transpired by stomata present in the leaves of the plants.
A very little amount of water is transpired from the stems or barks of the plants with the help of lenticels.

Additional Information

Transpiration helps in cooling the structures of the plant when exposed to hot sunlight. Excess water is removed from the cells of the plant to prevent plant decay.
The osmotic balance of the cell is maintained by the process of transpiration.
Transpiration is the unavoidable consequence of gas exchange in the leaf. This is because the plant has to open pores on the leaves called the stomata.
When they open gas exchange occurs and the plant releases Oxygen as waste while simultaneously absorbing CO₂ for use during photosynthesis.
It also helps in the absorption and distribution of water along with minerals from the soil through roots.