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  • The response to the difference of light and dark periods ...
Multiple choice

The response to the difference of light and dark periods is called 

  1. photoperiodism

  2. photosynthesis

  3. germination

  4. fertilization

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photoperiodism is the physiological reaction of organisms to the length of day or night. Plants use this to time seasonal activities like flowering.

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