Question

______ is a pigment which controls photoperiod, flowering, seed germination, stomatal opering.

• A. $P_{680}$
• B. $P{r}_{660}$
• C. $P_{700}$
• D. $Pf{r}_{730}$

Answer 1

The correct option is D $Pf{r}_{730}$

Pfr 730 is the active form of phytochrome which is involved in regulating photoperiodic responses in plants, inducing flowering in long day plants and also aid in other plant activities like seed germination, stomatal opening.

So the correct option is 'PFr730'.