Question

03. Algal cell wall is composed of
(1) Cellulose, chitin, hemicellulose
(2) NAG, galactans, mannans
(3) Hemicellulose, pectin and proteins
(4) Cellulose, galactans, mannan and minerals​

Answer 1

Cellulose, galactans, ma nan. And minerals

Answer 2

‘Cellulose’, ‘galactans’, ‘mannan’ and ‘minerals’​ are composed by the Algal cell wall.

Explanation:  

The “red algae” possess the “complex composite cell walls” of cellulose, xylan, mannan and mineral. The algal cell wall contains the polysaccharide such as cellulose which is a glucon type or the variety of glycoprotein. They have additional polysaccharide in algal cell walls forming an algal taxonomy. These algae are capable of producing their own food and also are nutrient rich.