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Question

Magnesium is found in

A
Chlorophyll
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B
Carotenoid
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C
Phycobilin
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D
Cytochrome
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Solution

The correct option is A Chlorophyll
Magnesium is an essential plant macronutrient. It is a component of green pigment chlorophyll.
Chlorophylls have a porphyrin head and a long phytol tail. The porphyrin head is a cyclic tetrapyrrole structure in which four pyrrole rings are coordinated to central magnesium atom.
Deficiency of magnesium leads to interveinal chlorosis, i.e., yellowing of leaves and other plant parts.

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