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Photoperiodic stimulus is perceived by
 

Option: 1

Leaves


Option: 2

Roots


Option: 3

Flowers


Option: 4

Stem


Answers (1)

best_answer
 
  • Phytochromes are the chemicals which perceive the photoperiodic stimulus.
  • The wavelength of light is perceived by the leaves. 
  • A defoliated plant does not flower.
  • A single leaf is sufficient to stimulate the flowering.
  • Phytochrome is present in roots, coleoptiles, stems, hypocotyls, cotyledons, petioles, leaf blades, vegetative buds, flower tissues, seeds and developing fruits of higher plants. 

Hence, Photoperiodic stimulus is perceived by leaves

Posted by

Ritika Jonwal

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