Characteristics of Living Organisms · NCERT Biology

Photoperiod affects reproduction in:

  1. Only flowering plants in the tropics
  2. Only warm-blooded animals in winter
  3. Seasonal breeders, both plants and animals
  4. All living organisms except the bacteria
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Correct answer: Seasonal breeders, both plants and animals

Photoperiodism is the physiological reaction of organisms to the length of day or night. It significantly influences the reproductive cycles of seasonal breeders in both the plant and animal kingdoms.

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