PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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auxin
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cytokinin
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gibberellins
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ethylene
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Detailed explanation-1: -An auxin, indole‐3‐acetic acid (IAA), was the first plant hormone identified. It is manufactured primarily in the shoot tips (in leaf primordia and young leaves), in embryos, and in parts of developing flowers and seeds.
Detailed explanation-2: -The chemical name of auxin is indole-3-acetic acid (IAA).
Detailed explanation-3: -Yes, it is true that shoot of a plant bends towards light during its growth and it is due to the presence of growth hormone, Auxin.
Detailed explanation-4: -(a) Auxins are group of plant hormones synthesized at the shot-tip of the plant.
Detailed explanation-5: -The hormones auxin and cytokinin are key regulators of plant growth and development. As they are active at minute concentrations and regulate dynamic processes, cell and tissue levels of the hormones are finely controlled developmentally, diurnally, and in response to environmental variables.