Q6 / 180 · AIIMS 2001 · Botany

Stomata opens

  • Correct answer
    A
    in day time - for gaseous exchange
  • B
    in day time - no gaseous exchange
  • C
    in night time only - for gaseous exchange
  • D
    in night time only - no gaseous exchange.

Solution

Stomata are meant for gaseous exchange but are also the main source of transpiration. In majority of plants stomata open in the presence of light i.e., in daytime and close in darkness (night).

Hence, the correct answer is option: 'A'.

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