Question

What is the process of evaporation of water through stomata of leaves called?

• A. Photosynthesis
• B. Respiration
• C. Transpiration
• D. Excretion

Hint:

Transpiration helps in:
• Cooling plants
• Ascent of sap
• Maintaining water balance

Answer 1

The Correct Option is C

Concept:
Plants absorb water from soil through roots. A large amount of this absorbed water is lost into the atmosphere as water vapour through tiny openings called stomata. This process is known as: \[ \boxed{\text{Transpiration}} \] Transpiration mainly occurs through:
• Stomata
• Cuticle
• Lenticles But stomata are the major route.

Step 1: Understand stomata.
Stomata are tiny pores present on leaf surfaces. Functions:
• Gas exchange
• Water vapour loss

Step 2: Understand transpiration.
When water evaporates through stomata: \[ \text{Water} \rightarrow \text{Water vapour} \] This process is called transpiration.

Step 3: Analyze all options carefully.
Option (A): Photosynthesis
Food preparation process. Incorrect. Option (B): Respiration
Energy releasing process. Incorrect. Option (C): Transpiration
Evaporation of water through stomata. Correct. Option (D): Excretion
Removal of metabolic wastes. Incorrect.

Step 4: Select the correct answer.
Therefore, evaporation of water through stomata is called: \[ \boxed{\text{Transpiration}} \] Hence, \[ \boxed{(3)\ \text{Transpiration}} \]