How many layers is the pollen grain wall comp | vedclass

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(B) The pollen grain wall,known as the sporoderm,is composed of two distinct layers: $1$. The outer layer is called the exine,which is made of sporopo

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Two

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(B) The pollen grain wall,known as the sporoderm,is composed of two distinct layers: $1$. The outer layer is called the exine,which is made of sporopollenin,one of the most resistant organic materials known. $2$. The inner layer is called the intine,which is thin and continuous,composed of cellulose and pectin. Therefore,the pollen grain wall consists of two layers.

How many layers is the pollen grain wall composed of?

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