#Question id: 10467
#Unit 6. System Physiology – Plant
The COP1-SPA complex acts as a positive regulator as well as acts as negative regulator by shown in statements;
a) Act as negative regulator−that targets transcription factors for degradation during phytochrome and cryptochrome responses
b) Acts as a positive regulator−that targets transcription factors for degradation during phytochrome and cryptochrome responses
c) Acts as a negative regulator− during UV-B signaling by interacting with the C-terminal region of UVR8 in the nucleus UVR8- COP1-SPA complex then activates the major transcription factor HY5, which controls the expression of many of the genes induced by UV-B
d) Acts as a positive regulator during UV-B signaling by interacting with the C-terminal region of UVR8 in the nucleus UVR8- COP1-SPA complex then activates the major transcription factor HY5, which controls the expression of many of the genes induced by UV-B
Whichof the following combination from avbove statements of UVR8 is true?
#Question id: 10468
#Unit 6. System Physiology – Plant
Why are stomata required in leaf surface?
#Question id: 10469
#Unit 6. System Physiology – Plant
When aquatic plants are kept in terrestrial habitat; what adaptations do these plants develop themselves?
#Question id: 10470
#Unit 6. System Physiology – Plant
when the environmental stimuli associated with high CO2 demand inside the leaf are transduced into
#Question id: 10471
#Unit 6. System Physiology – Plant
Under temperate conditions, which one of the two major factors that are involved with light-dependent stomatal opening are,
#Question id: 10472
#Unit 6. System Physiology – Plant
In greenhouse grown leaves of broad bean stomatal movements closely correlate with incident solar radiation at the leaf surface and stomatal aperture opening and closing as light levels reaching the leaf surface given in graph
A. Mid of the day stomatal aperture has a largest
diameter, water loss and transpiration rate will be highest at the same time
B. In mid of the day incident light is highest in
terms of PPFD and can also say CO2 diffusion will be highest
C. The stomatal aperture has a largest diameter
resulting closing of stomatal pore, water loss and transpiration rate will be
lowest due to closing of stomata
D. In mid of the day incident light is highest in
terms of PPFD resulting CO2 will not diffuse
which of the following combination from the given graph will be CORRECT?