Practice question

Answer: B) Definite day length beyond or below which flowering does not occur. For PHOTOPERIODISM, remember the key idea and you’ll land on this option; the distractors usually swap cause and effect or confuse similar terms. Avoid: A) Minimum light required for photosynthesis; C) Total duration of sunlight in a year; D) Length of vegetative phase. Name the process first, then pick the option that describes it — don’t reverse cause and effect.