Question

what is phototropism? how does it occur in plants describe an activity to demonstrate

Answer 1

$Here \: is \: the \: answer \: of \: your \: question$

$\textbf{PHOTOTROPISM}$

Movement/Growth of plants towards light is known as Phototropism.

* In this stem of plant shows positive phototropism and roots shows negative phototropism.

* Stem shows positive phototropism as they grow in the direction of light.

And roots shows negative phototropism as they don't grow in the direction of light.
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$\textbf{Activity}$

* Take a plant and kept it near the open window of a dark room.

* After few days we found that the growth of the plant tip is towards the window and the plant is growing by bending itself towards the light coming from window.

* It proves that light is responsible for the bending of the branch/stem.
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Answer 2

Phototropism is the the tendency of a plant to grow towards light.

In plants , the stem shows Positive phototropism and the Roots show negative phototropism as the Stem is growing towards the sunlight i.e upwards and the roots are growing in the opposite direction to the sunlight i.e downwards.

Activity - Take a seed and sow it in a pot and put the pot in a dark room with only one light source which is placed horizontally to the plant. Then let the plant grow . After a few weeks , we can observe that the plant has bent and grown in a horizontal manner . This proves Phototropism

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