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🔬 Biology  ·  Plant Growth and Development  ·  NEET

Plants that flower only when the day length is shorter than a critical value are:

  • A short-day plants
  • B long-day plants
  • C day-neutral plants
  • D aquatic plants

Correct answer: A. short-day plants

Explanation: Short-day plants flower when nights are long (days short).

Concept context

Phases of plant growth, the five classical plant hormones plus newer ones, photoperiodism, vernalization, and seed dormancy.

Read the full Plant Growth and Development notes →