Plants coordinate their behaviour against environmental changes by using plant hormones. [True/False]
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Answer:
Auxins hormone controls a plant response to light and gravity. It is made by the cells present at the tip of a stem and roots. This hormone moves the plant away from light and towards gravity. It speeds up the growth of stem and slows down the growth of roots.
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Answer:
True.
Yes,Plants coordinate their behaviour against environmental changes by using plant hormones.
Explanation:
- Plants show their movement by growth of various parts.
- Plant show some auxin due to various stimulus like water,light,gravity,touch etc.
- The function of control and coordination is regulated by chemical substance is called plant hormones or phytohormones.
- Plants do not have sense organ but still they can respond with help of phytohormones or plant hormones.
- For example=Bending of shoots towards the light.Plant respond towards light and gravity with the help of Auxins.
- Auxin is uniformly distributed but when the light falls on it then it shift towards the darker region away from light.
- So that side where auxin is present grows very fast and the stem facing the sun not grow that much,thats why stem bend towards the light.
- Cytokinensis promotes cells division
- Abscisic acid promotes dormancy
- Gibberellins promotes elongation of shoots and fruit growth, in breaking the dormancy in seeds and buds.
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