HORTICULTURE SCIENCE
ULTRA STRUCTURE OF PLANT CELLS AND ORGANS
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Question
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What is the name of naturally occurring Auxin in plant?
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1-napthaleneacetic acid (NAA)
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2, 4-Dichlorophenoxyacetic acid (2, 4-D)
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Indole 3-acetic acid (IAA)
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1-napthoxyacetic acid (NOA)
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Explanation:
Detailed explanation-1: -(A) Indole-3-acetic acid (IAA), 4-chloroindole-3-acetic acid (4-Cl-IAA), and phenylacetic acid (PAA) are naturally occurring active auxins.
Detailed explanation-2: -Indole-3-acetic acid (IAA) is the most abundant and the basic auxin natively occurring and functioning in plants. It generates the majority of auxin effects in intact plants, and is the most potent native auxin. There are four more endogenously synthesized auxins in plants.
Detailed explanation-3: -The main auxin in plants is indole-3-acetic acid (IAA), and it is now widely accepted that most IAA is derived from tryptophan (Trp) via a 2-step pathway.
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