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Question

Plants which disregard the requirement of a definite day length for flowering are called

A
Short day plants
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B
Long day plants
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C
Day neutral plants
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D
Long-short day plants
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Solution

The correct option is C Day neutral plants
Plants response to the length of day and night to flower. This is called as photoperiodism. They require definite day length for flowering. Short day plants require short period of day length to flower. Long day plants require the long period of day length to flower. However, there are certain plants which do not depend on critical day length for flowering. These plants disregard the requirement of a definite day length for flowering. These plants are called as day-neutral plants.
Thus, the correct answer is 'Day neutral plants'.

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