Green algae usually have a rigid cell wall made of an inner layer of __ and an outer layer of _.

cellulose, cellulose

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pectose, pectose

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pectose, cellulose

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cellulose, pectose

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Solution

The correct option is D cellulose, pectose
Cell wall of green algae is thin, transparent and firm and consists of outer pectic and inner cellulosic layers. It is smooth but in most of species it gets thickened at the anterior end to form an apical papilla.

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