Sunken stomata occur in
xerophytes
hydrophytes
mesophytes
opsanophytes
A.
xerophytes
A sunken stomata is a stomata in a small pit, which protects the escaping water vapor from air currents, decreasing water loss from the leaf. Sunken stomata are commonly found in plants in arid environments as one of their adaptations to preserve water.
The order of occurrence of the cytochromes in the F1 particle is
cyt-b, cyt-c, cyt-a-cyt a3
cyt-c, cyt-b, cyt-a-cyt a3
cyt-a, cyt-b, cyt-c-cyt a3
cyt-a3, cyt-a, cyt-c-cyt b
Chemiosmotic theory of ATP synthesis, in the chloroplast and mitochondria, is based on :
proton gradient
membrane potential
accumulation of K ions
accumulation of Na ions
Which of the following is photophosphorylation?
Production of ATP from ADP
Production of NADP
Synthesis of ADP from ATP
Production of PGA
From which of the following, photosynthetic autotrophs receive their energy?
Heat
Inorganic chemicals
Organic chemicals
Light
Plants purify air by which process?
Photorespiration
Photosynthesis
Photophosphorylation
Transpiration
The first carbon dioxide fixation in C4 pathway occurs in chloroplasts of
guard cells
mesophyll cells
bundle sheath cells
epidermal cells
