Plant Hormones
Plant Hormones
Responses and growth in plants are controlled by chemical substances called plant hormones, or phytohormones. These substances are found in very minute quantities in plant tissues. A hormone is produced in specific cells of the plant and is transferred to another part where it influences a specific physiological process. While some plant hormones such as auxins, gibberellins and cytokinins stimulate growth, some others such as abscisic acid retard it.
These hormones are produced in almost all parts of the plant and are transmitted to various parts of the plant. They may act synergistically or individually. Roles of different hormones can be complementary or antagonistic. Hormones play an important role in the processes like vernalisation, phototropism, seed germination,dormancy etc. along with intrinsic factors.Plant hormones control directional growth in plants and also bring about growth in carefully controlled ways.
How hormones travel in plants? | |||
| Right Option : D | |||
| View Explanation | |||
Snail moves with the help of its _________________ | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following is Plant Hormone? | |||
| Right Option : D | |||
| View Explanation |
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