NEET BIOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -Photoperiod refers to the period of time in 24 hours that plants are exposed to light. For example, a 12-hour photoperiod consists of 12 hours of light and 12 hours of darkness, whereas an 8-hour photoperiod consists of 8 hours of light and 16 hours of darkness.

Detailed explanation-3: -Photoperiod is defined as day length or ‘the period of daily illumination received by an organism’ (Concise Oxford Dictionary, 1999) and remains constant between years at any given geographic location.

Detailed explanation-4: -Photoperiod: The recurring cycle of uninterrupted light and dark periods a plant is exposed to; usually 24 hours, with varying ratios of uninterrupted light and dark periods. Long-Day Plant (LD): A long-day plant requires >12 hours of sunlight, or <12 hours of uninterrupted darkness, to produce a bloom or flower.

Detailed explanation-5: -Plant Physiology and Development Photoperiodism is the response to changes in daylength that enables plants to adapt to seasonal changes in their environment. The best studied example of photoperiodism in plants is flowering, but other responses to daylength include bud dormancy and bulb or tuber initiation.