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Q.

Vernalization is: 

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a

Growth curvature in response to light

b

Process of overcoming apical dominance

c

Physiological reaction of organisms to the length of night or a dark period.

d

The promotion of flowering by exposure to a period of low temperature.

answer is D.

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Detailed Solution

There are plants for which flowering is either quantitatively or qualitatively dependent on exposure to low temperature. This phenomenon is termed vernalisation. Vernalisation refers specially to the promotion of flowering by a period of low temperature.

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