Question
Which of the following is a day neutral plant
Helianthus annuus
Euphorbia pulcherrima
Avena sativa
Beta vulgaris
Solution
A.
Helianthus annuus
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.
