Examlex
Which of the following has intrinsic value?
Photoperiodic Response
The physiological reaction of organisms to the length of day or night, affecting processes such as flowering in plants and breeding in animals.
Photoperiodism
The physiological reaction of organisms to the length of day or night, often affecting flowering and reproduction.
Long-day Plant
Plants that flower only after being exposed to light periods longer than a certain critical length.
Sunflower
A large plant belonging to the daisy family, known for its large flowering heads and edible seeds.
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