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Differentiate phototropism from photonasty. - Science

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प्रश्न

Differentiate phototropism from photonasty.

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उत्तर

Sr. No. Phototropism Photonasty
1. The unidirectional movement of a plant part to light stimulus is called phototropism. It is slow and irreversible. The non-directional movement of a plant part in response to light is called photo nasty. It is immediate, temporary and reversible.
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अध्याय 19: Plant Physiology - Exercise [पृष्ठ २३१]

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सामाचीर कलवी Science [English] Class 9 TN Board
अध्याय 19 Plant Physiology
Exercise | Q V. 3. | पृष्ठ २३१
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