ANIMAL PHYSIOLOGY
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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response of an organism to seasonal changes in day length.
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directional movement of plant to directional stimulus.
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non-directional movement of plant. The direction is determined by plant
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response of plant to the touching
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Detailed explanation-1: -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.
Detailed explanation-2: -Response of a plant to the change in relative length of the day and night is called phototropism.
Detailed explanation-3: -Plants use light to track time, which is known as photoperiodism. They can tell the time of day and time of year by sensing and using various wavelengths of sunlight. Light can also elicit a directional response in plants that allows them to grow toward, or even away from, light; this is known as phototropism.
Detailed explanation-4: -Photoperiodism is the physiological reaction of organisms to the length of day or night. It occurs in plants and animals. Photoperiodism can also be defined as the developmental responses of plants to the relative lengths of light and dark periods.
Detailed explanation-5: -Thus, photoperiod is a light duration or the length of day and night, while photoperiodism is the effect of light duration on the plant’s growth. Depending upon the photoperiodic effect on flowering, the plants are grouped into three classes, namely long day, short day and day-neutral plants.