Question : Identify the correct statement about green algae.
Option 1: Green algae usually have a soft cell wall made of an inner layer of pectose.
Option 2: Green algae usually have a rigid cell wall made of an inner layer of protein and an outer layer of fibre.
Option 3: Green algae usually have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.
Option 4: Green algae usually have a rigid cell wall made of an inner layer of fat and an outer layer of protein.
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Correct Answer: Green algae usually have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.
Solution : The correct option is Green algae usually have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.
Green algae have cell walls made of cellulose, hemicellulose, and other polysaccharides. Cellulose is a complex carbohydrate and is present in almost all plant cells. The outer layer of pectose is also a complex polysaccharide that is primarily composed of chains of galacturonic acid molecules.
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