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NDA 2021 GAT · General Knowledge · Plant Physiology · medium

The loss of water in the form of vapour from the aerial parts of a plant, mainly through stomata, is called

Single correct option

The loss of water in the form of vapour from the aerial parts of a plant, mainly through stomata, is called
  1. A. translocation
  2. B. guttation only
  3. C. transpiration
  4. D. respiration
Show answer and solution

Answer: (C) transpiration

Transpiration is evaporation of water from leaves through stomata, and it drives water uptake and cools the plant. Translocation is transport of food in phloem, and respiration releases energy from food. Guttation is exudation of liquid drops, not vapour.
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Original question written in the NDA 2021 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake