TLS Online TPP Program

#Id: 10283

#Unit 6. System Physiology – Plant

Increased [Ca2+]cyt activates plasma membrane anion efflux channels, and these two effects combine to depolarize the membrane. Membrane depolarization closes voltage‐sensitive K+ in channels but opens K+ out channels. 

TLS Online TPP Program

#Id: 10284

#Unit 6. System Physiology – Plant

K+in channels are inhibited directly by the rise in [Ca2+]cyt. Overall, therefore, the increase in [Ca2+]cyt causes the net efflux of anions and K+ from the cell, leading to a fall in guard cell turgor.

TLS Online TPP Program

#Id: 10285

#Unit 6. System Physiology – Plant

The elevated calcium levels in the cytosol then activate CDPKs that phosphorylate and activate RBOH proteins which generate more ROS.

TLS Online TPP Program

#Id: 4576

#Unit 6. System Physiology – Plant

Function of light

a) Development

b) Photosynthesis

c) Stomata opening

d) Flowering

TLS Online TPP Program

#Id: 4577

#Unit 6. System Physiology – Plant

Light wavelengths detected by plant light receptors.

TLS Online TPP Program

#Id: 4578

#Unit 6. System Physiology – Plant

Phytochrome Can Interconvert between Pr and Pfr Forms