BIOLOGY
HORMONES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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auxin
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cytokinins
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gibberellin
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ethylene
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abscisic acid
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Detailed explanation-1: -These results suggest that auxin and cytokinin exert opposite effects on amyloplast development by regulating the expression of the genes required for starch biosynthesis.
Detailed explanation-2: -In the root meristem, auxin induces the meristematic cell division, whereas cytokinin promotes the cell to switch from the meristematic to differentiated state through inhibiting auxin signaling.
Detailed explanation-3: -The apical bud produces a plant hormone, auxin, (IAA) that inhibits growth of the lateral buds further down on the stem towards the axillary bud. Auxin is predominantly produced in the growing shoot apex and is transported throughout the plant via the phloem and diffuses into lateral buds which prevents elongation.
Detailed explanation-4: -Cytokinin promotes the growth of lateral buds by suppressing the growth of apical bud.