Sporopollenin, a chemical substance is found in___
A
intine of pollen grain
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B
exine of pollen grain
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C
endothecium of anther
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D
tapetum of anther
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Solution
The correct option is B exine of pollen grain The wall of pollen grain is made up of two layers, the outer exine and inner intine. Intine is pecto-cellulosic in nature and contains enzymatic proteins. Exine is made of a highly resistant fatty substance called sporopollenin and enzymes and proteins for compatibility reactions.