What do you mean by photoperiod?

Duration of time during the night when an organism receives sunlight.

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Duration of time during the day when an organism receives rainfall.

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Duration of time during the day when an organism receives high temperature.

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Duration of time during the day when an organism receives sunlight.

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Solution

The correct option is D Duration of time during the day when an organism receives sunlight.
Photoperiod affects the vegetation of a place. It is the duration of time during the day when an organism receives sunlight. Sunlight is essential for the growth of plants. So, in places that receive sunlight for a longer duration, trees grow faster.

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