A) Helianthus annuus
B) Euphorbia pulcherrima
C) Arena sativa
D) Beta vulgaris
E) None of the above
Correct Answer: A
Solution :
Day neutral plants do not need a specific photoperiod to produce flowers. They are also called intermediates or photoneuirals. Their photoperiod varies from a few hours to 24 hours of uninterrupted light, e.g., tomato, cucumber, sunflower (Helianthus annus), maize, cotton, etc.
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