Dark Period Interrupted by Red Light – Short Day Plants

Practice question

Question

Interruption of dark period by red light in short day plants results in:

Options

Choose one · Correct answer highlighted

Flowering No effect Inhibition of flowering Correct Early flowering

Explanation

Go with C — Inhibition of flowering. Under PHOTOPERIODISM, this is the standard explanation you’d use in class: it names the real driver or definition, while the rest are nearby but wrong. Not these: A) Flowering; B) No effect; D) Early flowering. When two options sound similar, choose the one that matches the textbook definition most tightly.

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