Question

The expulsion of water through stomata in the form of vapor from the aerial part of the plant is known as:

• A. osmosis
• B. transpiration
• C. excretion
• D. diffusion

Hint:

Transpiration helps in cooling plants, maintaining water flow, and ensuring the uptake of minerals from the soil.

Answer 1

The Correct Option is B

The process by which water is expelled from plants through the stomata (small pores in leaves and stems) in the form of vapor is called \textit{transpiration}. This process plays a crucial role in maintaining the flow of water and nutrients from the roots to the rest of the plant, and also helps in cooling the plant.
Osmosis (option A) refers to the movement of water across a semipermeable membrane from a region of low solute concentration to high solute concentration. Excretion (option C) is the process of eliminating waste materials from the body. Diffusion (option D) refers to the movement of molecules from an area of higher concentration to an area of lower concentration, but not specifically in the context of water vapor expulsion in plants.