Q. Which of the following is a day neutral plant?
A) $Helianthus\ annuus$
B) $Euphorbia\ pulcherrima$
C) $Avena\ sativa$
D) $Beta\ vulgaris$
Explanation
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, maize and cotton, etc.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.