________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?

________________ is a special constituent of chlorophyll without which

1.	________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?
A.	Calcium
B.	Nitrogen
C.	Phosphorous
D.	Hydrogen
Answer» C. Phosphorous

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________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?

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