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Assertion :Vernalisation is the promotion of flowering by a period of low temperature. Reason: It prevents precocious reproductive development late in the growing season.
Assertion :Vernalisation is the promotion of flowering by a period of low temperature. Reason: It prevents precocious reproductive development late in the growing season.
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
There are plants for which flowering is either quantitatively or qualitatively dependent on exposure to low temperature. This treatment is termed as vernalization. It prevents precocious reproductive development late in the growing season and enables the plant to have sufficient time to reach maturity. Vernalisation refers especially to the promotion of flowering by a period of low temperature. Some important food plants, wheat barley, rye have two kinds of varieties: winter and spring varieties. The spring varieties are planted in spring. They come to flower and bear fruits prior to the end of growing season. If the winter varieties are sown similarly, they fail to flower and produce fruits before the end of growing season. They are planted in autumn, form seedlings in which form they cover winter. The seedlings resume growth in spring. They bear flowers and fruits in summer.So the correct option is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.
There are plants for which flowering is either quantitatively or qualitatively dependent on exposure to low temperature. This treatment is termed as vernalization. It prevents precocious reproductive development late in the growing season and enables the plant to have sufficient time to reach maturity. Vernalisation refers especially to the promotion of flowering by a period of low temperature. Some important food plants, wheat barley, rye have two kinds of varieties: winter and spring varieties. The spring varieties are planted in spring. They come to flower and bear fruits prior to the end of growing season. If the winter varieties are sown similarly, they fail to flower and produce fruits before the end of growing season. They are planted in autumn, form seedlings in which form they cover winter. The seedlings resume growth in spring. They bear flowers and fruits in summer.
So the correct option is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.
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