Study of periodical changes in plants in relation to season is called as
A
Physiognomy
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B
Phycology
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C
Phenology
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D
Photoperiodism
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Solution
The correct option is D Phenology Phenology is the study of periodic plant and animal life cycle events and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors. Physiognomy is the assessment of a person's character or personality from his or her outer appearance, especially the face. Phycology is the scientific study of algae. Photoperiodism is the physiological reaction of organisms to the length of day or night.