Question

what do agriculturists call plants that flower regardless of the length of daylight or darkness?
short day plants
day neutral plants
long day plants
mixed day plants

Explanation:

Plants are classified based on their photoperiodic responses. Day - neutral plants flower regardless of the length of daylight or darkness. Short - day plants flower when the day length is shorter than a critical length, long - day plants flower when the day length is longer than a critical length, and there is no such thing as mixed - day plants in this context.

Answer:

Day Neutral Plants