Significance of C4 pathway

Q. Which of the following gas is released during the process of photosynthesis?

1. Nitrogen
2. Carbon dioxide
3. Ammonia
4. Oxygen

Q. Which of the following plants are low carbon dioxide compensation plants i.e. thrive well at even low carbon dioxide concentrations

1. C3- plants
2. C4- plants
3. C2- plants
4. Alpine plants

Q. In $C_4$-plants, photosystem II is absent in chloroplasts of

1. Mesophyll cells
2. Bundle sheath cells
3. Palisade cells
4. Spongy cells.

Q. Tropical plants like Sugarcane show high efficiency of carbon dioxide fixation because of

1. Calvin cycle
2. Hatch-Slack cycle
3. Cyclic- photophosphorylation
4. TCA cycle

Q. The C4 plants are photosynthetically more efficient than C3 plants because

1. They have more chloroplasts
2. The carbon dioxide compensation point is more
3. Carbon dioxide generated during photorespiration is trapped and recycled through PEP carboxylase
4. The carbon dioxide efflux is not prevented