Biology, asked by Karankumar8270, 10 months ago

(a) Define phototropism. Give one example of phototropism.
(b) How does phototropism occur in a plant stem (or shoot)? Explain with the help of labelled diagrams.
(c) What is meant by positive phototropism and negative phototropism? Give one example of each type.

Answers

Answered by nupursingh44
3

Explanation:

(a) plant need sunlight show the stem ( or shoots) respond to sunlight by growing towards it is called phototropism.

b) the plant also turn the leaf to face the sun

the stem of the plant response to light and bends towards it.

the plant stem respond to light and bends towards it due to the action of auxin hormone.

c) the leaf of the plant turn towards the sun so as to obtain the maximum sunlight does the stem and leaves of the plant are positively phototrophic.

the root bends to the left side away from the light this observation shows that the root of the plant respond to light by growing away from it does the root of the plant is negatively phototrophic.

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