A short-day plant was exposed to alternating | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Short-day plants (SDPs) require a long uninterrupted dark period to flower.Phytochrome exists in two interconvertible forms: $P_r$ (red light abso

Vedclass · Accepted Answer

Flowering would occur

Vedclass · Answer

(A) Short-day plants (SDPs) require a long uninterrupted dark period to flower.Phytochrome exists in two interconvertible forms: $P_r$ (red light absorbing) and $P_{fr}$ (far-red light absorbing).$P_{fr}$ is the active form that inhibits flowering in short-day plants.Exposure to red light converts $P_r$ to $P_{fr}$,while exposure to far-red light converts $P_{fr}$ back to $P_r$.If the last treatment is far-red light,the phytochrome is converted to the $P_r$ form.Since $P_r$ does not inhibit flowering in short-day plants,the plant perceives the condition as a long night and flowering will occur.

$A$ short-day plant was exposed to alternating red-far red light treatments. What would happen if the last treatment was of far-red light?

Similar Questions

Which of the following factors exclusively affects reproduction in seasonal breeders,both plants and animals?

In some plants,the cold treatment may be replaced by the application of

Phytochrome plays an important role in

$A$ group of plants flowered when exposed to a $12$ hour day and $12$ hour night cycle. Another group of the same plants did not flower when exposed to the same day-night cycle but with a brief light interruption during the night. What type of plants are these?

Analogy type questions:
$(1)$ Coconut milk : Zeatin : : $ABA$ : ...............
$(2)$ Phenolic acid : Seed dormancy : : Cold treatment : ...............

Vedclass Test Series

Exam Paper Generator

Online Exam Module