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JKCET Photoperiodism — practice questions

Explore 1 free Photoperiodism questions in JKCET Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Photoperiodism questions and exercises with answers

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**Photoperiodism** refers to:Read the answer and worked solution →

Worked practice questions

**Photoperiodism** refers to:

  1. Response of plants to gravity
  2. Response of plants to **day length** (light duration) — affecting flowering
  3. Response to soil temperature
  4. Response to water stress
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Correct answer: B. Response of plants to **day length** (light duration) — affecting flowering

**Photoperiodism:** plants flower in response to the relative duration of light and dark (day length). Garner & Allard (1920). **Three classes:** short-day plants (e.g. tobacco), long-day plants (e.g. spinach), day-neutral (e.g. tomato).

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