Plants purify air by which process?
Photorespiration
Photosynthesis
Photophosphorylation
Transpiration
B.
Photosynthesis
During photosynthesis, carbon dioxide is reduced into carbohydrates and oxygen is liberated, ie, plants purify air by process of photosynthesis.
Photorespiration is a respiratory process by which they take up oxygen in the light and give out some carbon dioxide, contrary to the general pattern of photosynthesis. It takes place in higher plants.
Photophosphorylation is the synthesis of ATP from ADP and phosphate that occurs in a plant using radiant energy absorbed during photosynthesis.
Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. It is the evaporation of water from plant leaves.
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
The first carbon dioxide fixation in C4 pathway occurs in chloroplasts of
guard cells
mesophyll cells
bundle sheath cells
epidermal cells
