AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Transpiration is the process by which plants lose excess water in the form of water vapour through their stomata (mainly from leaves).
Source: Life Processes, Section 5.5.2
The examiner expects a one-line definition mentioning: (1) loss of water, (2) in the form of water vapour/water, (3) from plants (through stomata/leaves). The textbook mentions transpiration under excretion in plants as a way to get rid of excess water. Do not confuse it with respiration.