Following are the certain statements regarding C3, C4 and CAM plants?A. The ratio of water loss to CO2 uptake is higher in CAM plants than it is in either C3 and C4 plants.B. The rate of photosynthesis attains maximum rate at lower intracellular CO2 partial pressure in C4 plants than in C3 plants.C. The compensation point in C3 plants are always lower than C4 plantsD. Plants with C4 metabolism need less rubisco than C3 plants to achieve a given rate of photosynthesis.Which one of the following combinations of above statements is correct?

C 4 PHOTOSYNTHESIS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	A and B
B	A and C
C	C and D
D	B and D

Explanation:

Detailed explanation-1: -Answer: The Calvin cycle produces a three-carbon compound from C3 photosynthesis, whereas C4 photosynthesis produces an intermediate four-carbon compound that splits into a three-carbon compound for the Calvin cycle. Plants that use CAM photosynthesis collect sunlight during the day and fix CO2 molecules at night.

Detailed explanation-2: -Due to their reduced rate of photorespiration and high rate of photosynthesis, C4 plants are more efficient than C3 plants. The main enzyme of carbon fixation in the Calvin cycle is RuBisCO. It shows an affinity for both CO2 and O2.

Detailed explanation-3: -C3 plants do not have special features to combat photorespiration, while C4 plants minimize photorespiration by performing carbon dioxide fixation and Calvin cycle in separate cells. CAM plants, on the other hand, minimize photorespiration by performing carbon dioxide fixation and Calvin cycle at separate times.

Detailed explanation-4: -Higher Atmospheric CO2 Levels Favor C3 Plants Over C4 Plants in Utilizing Ammonium as a Nitrogen Source.

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