Q22 / 160 · JIPMER 2004 · Botany

Which of the following is a day neutral plant?

  • Correct answer
    A
    Helianthus annuus
  • B
    Euphorbia pulcherrima
  • C
    Avena sativa
  • D
    Beta vulgaris

Solution

Day neutral plants do not need a specific photoperiod to produce flowers. They are also called intermediates or photoneutrals. Their photoperiod varies from a few hours to 24 hours of uninterrupted light e.g. tomato, cucumber, sunflower, Helianthus annuus, maize and cotton etc.

Hence, the correct answer is option: 'A'.

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