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Substance related with phototropism in shoot, is

a)

Ethanol

b)

Cytokinins

c)

Auxin

d)

Gibberellins



Question ID - 5642 | SaraNextGen Top Answer

Substance related with phototropism in shoot, is

a)

Ethanol

b)

Cytokinins

c)

Auxin

d)

Gibberellins

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

Auxins concentration increase in shaded area (opposite side of light). Increased auxin concentrations are stimulatory for shoot growth so, shaded side shows more growth than lighed side. Thus, bending of shoot takes place towards the lighted side.

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