how does phototropism occur in plants
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Answered by
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The cells on the plant that are farthest away from the light have a chemical called auxin,
Auxin reacts when phototropism occurs
Auxin reacts when phototropism occurs
Answered by
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hey there!- :D
HERE'S UR ANSWER :
the directional movement of a plant part/plant in response to light is called phototropism.the shoot responds by bending towards light while roots responds by bending away from light. we know that the plant stem responds to light and bends towards it due to the action of auxin hormone.
this happens as follows :-
1.when sunlight comes from above,then the auxin hormone present at the tip of the stem spreads uniformly down the stem.due to the equal PRESENCE of auxin both the sides of the stem grows straight and with same rapidity.
2. when the light falls only on the right side of the stem,then the auxin hormone collects in the left side of the stem,away from light.this is becoz auxin hormone prefers to stay in shade that is moves away from light.
3 thus more auxin hormone is present in the left side of stem as compared to the right . the left side of stem ,grows faster than its right side and therefore the stem bends towards the right side (direction of light)
======================================================
hope it helps :)
HERE'S UR ANSWER :
the directional movement of a plant part/plant in response to light is called phototropism.the shoot responds by bending towards light while roots responds by bending away from light. we know that the plant stem responds to light and bends towards it due to the action of auxin hormone.
this happens as follows :-
1.when sunlight comes from above,then the auxin hormone present at the tip of the stem spreads uniformly down the stem.due to the equal PRESENCE of auxin both the sides of the stem grows straight and with same rapidity.
2. when the light falls only on the right side of the stem,then the auxin hormone collects in the left side of the stem,away from light.this is becoz auxin hormone prefers to stay in shade that is moves away from light.
3 thus more auxin hormone is present in the left side of stem as compared to the right . the left side of stem ,grows faster than its right side and therefore the stem bends towards the right side (direction of light)
======================================================
hope it helps :)
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