alleryWhich part of the plant senses day length?
AThe roots
BThe flowers
CThe seeds
DThe leaves
Answer & Solution
Correct answer: D. The leaves
1. Shoot apices cannot perceive photoperiods themselves.
2. A signal travels to them from elsewhere.
3. The leaves are the site of perception.
_Source: syllabus Biology, Chapter 15, Plant Growth and Development._
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