Q151 / 160 · JIPMER 2013 · Zoology

Which of the following plant keeps its stomata open during night and closed during the day?

  • A
    Orchid
  • Correct answer
    B
    Cactus
  • C
    Tea
  • D
    Wheat

Solution

Scotoactive mechanism of opening of stomata is seen in fleshy xerophytes like Opuntia, cactus, etc. They keep their stomata open at night and closed during daytimes.

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

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