Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Life Sciences System Physiology Plant Sensory photobiology
Following are certain statements regarding phytochrome-mediated signal transduction in Arabidopsis:
A. phyA and phyD are photo-stable, while phyB, phyC and phyE are photo-labile.
B. Prolonged light exposure and the conversion of PR to PFR cause phyA concentration to drop.
C. Exposure of light and conversion of PR to PFR cause movement of phytochromes from the cytosol into the nucleus.
D. phyB lacks nuclear localization sequence and depends on transporter protein for nuclear import
Which one of the combinations of above statements is correct?
1
A and B
2
A and C
3
A and D
4
B and C
5
Question Not Attempted