Tag: seed dormancy

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Multiple choice biology plant growth seed dormancy fruit plants: structure and function

Seed dormancy can be broken by the following combination of chemicals

  1. ${GA} _{3}$, IAA, ABA
  2. $KN{O} _{3}$, ${GA} _{3}$ and ethylene chlorohydrin

  3. NAA, 2, 4, 5-T and IAA
  4. ABA, BAP and ${GA} _{3}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Seed dormancy is induced in plants under unfavorable condition due to growth inhibitor hormone-like abscisic acid. Gibberellin is most commonly used to breaks the seed dormancy and induce flowering under normal condition. Apart from this, other chemicals are used to break the seed dormancy. These chemicals include potassium nitrate (KNO$ _3$), thiourea and ethylene chlorhydrin.

Thus, the correct answer is option B.