BIOLOGY
HORMONES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Gibberellin
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Auxin
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Cytokinin
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ABA
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Detailed explanation-1: -Plant hormones, mainly abscisic acid (ABA) and gibberellin (GA), are the major endogenous factors that act antagonistically in the control of seed dormancy and germination; ABA positively regulates the induction and maintenance of dormancy, while GA enhances germination.
Detailed explanation-2: -Abscisic acid (ABA) is the sole plant hormone known to maintain seed dormancy; it acts through a gene expression network involving the transcription factor ABSCISIC ACID INSENSITIVE 3 (ABI3).
Detailed explanation-3: -Fruit growth is mainly dependent on auxin and cytokinin.
Detailed explanation-4: -Seed dormancy can be defined as the state or a condition in which seeds are prevented from germinating even under the favourable environmental conditions for germination including, temperature, water, light, gas, seed coats, and other mechanical restrictions.