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why does we call the closing up of petals in the day and night time is considered to be a growth movement. expplain me friendsss.
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The variation in the intensity of some external- factor acts as stimulus. The direction of the movement is determined by the structure of the plant organ itself. It is not determined by an external stimulus. Nastic movements occur only in bifacial organs like the leaves and petals. These organs can bend only in one direction. Nastic movements occur due to growth changes or movements of variation. There are following types of nastic movements:
Hope it will help you pls mark it as a brainlist answer
Hope it will help you pls mark it as a brainlist answer
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