Question 1-3 of 12: Microbial Physiology | SWAYAM Cell Biology | Includes PYQs | Get Solutions with Detailed Explanations

During water stress, ABA increases dramatically in leaves causing stomatal closure. Given below are the various events involved in this process.

A. Opening of plasma membrane Ca^{2 +} permeable ion channels and elevation of cytosolic Ca^{2 +}

B. Activation of plasma membrane anion channels, efflux of anions and potassium ions.

C. Binding of ABA to cytosolic ABA receptor and inhibition of activity of Type 2 C protein phosphatases (PP₂Cs).

D. Phosphorylation and activation of NADPH oxidases (RBOH) and formation of apoplastic

ROS.

Which one of the following options represents the correct sequence of events involved? (June)

Growth of an organism was monitored at regular intervals of times and shown in the graph below. Around what time is the rate of growth zero?

The zero growth rate will be observed during

An organism that has peroxidase and superoxide dismutase but lacks catalase is mostly likely an (December)