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Plant Growth and Development — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYPlant Growth and Development1 Mark
MCQ
Growth regulator ethylene is used for:
  • A
    Retarding ripening of tomatoes
  • B
    Speeding up ripening of fruits
  • C
    Slowing down ripening of apples
  • D
    Both B and C
✓

Answer

  1. Speeding up ripening of fruits

Explanation:

Ethylene is a plant growth regulator. It is also called as ripening hormone as it is responsible for speeding up ripening of fruits.

Fruit ripening is accompanied by increase rate of respiration.

Due to increased respiration, complex carbohydrates are broken down into simpler sugars and cell wall becomes soft.

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