A hypothetical 'florigen' could be produced p | vedclass

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Question

(B) Long-day plants $(LDP)$ require a critical day length to flower. The flowering response is mediated by the phytochrome system. In $LDP$,the active

Vedclass · Accepted Answer

Red light during the night

Vedclass · Answer

(B) Long-day plants $(LDP)$ require a critical day length to flower. The flowering response is mediated by the phytochrome system. In $LDP$,the active form of phytochrome,$P_{fr}$,promotes flowering. During the night,$P_{fr}$ is converted back to $P_r$. By exposing the plant to red light during the dark period,$P_r$ is converted back to $P_{fr}$,thereby maintaining high levels of $P_{fr}$ and triggering the production of the hypothetical flowering hormone,'florigen',even if the natural day length is short.

$A$ hypothetical 'florigen' could be produced prematurely in a long-day plant by exposing it to:

Similar Questions

Differentiate between Photoperiodism and Vernalization.

'Both a short day plant and a long day plant can flower simultaneously in a given place'. Explain.

$A$: Phytochrome,a protein,has a regulatory function.
$R$: Various morphogenetic processes are regulated by it.

$A$ 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?

Give scientific reasons: Some plants flower in summer and some flower in winters.

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