Question

Algae have cell walls made up of:

• A. Cellulose, hemicellulose, and pectins
• B. Cellulose, galactose, and mannans
• C. Hemicellulose, pectins, and proteins
• D. Pectins, cellulose, and proteins

Answer 1

The correct option is A

Cellulose, hemicellulose, and pectins

The correct option is A.

Explanation of correct option:

1. Algae are photosynthetic organisms of the kingdom Plantae.
2. They possess cell walls made up of cellulose, hemicellulose, and pectins.
3. The inner layer is made up of cellulose, the middle layer of hemicellulose, and the outer layer of pectins.

Explanation of incorrect options:

Option B:

The cell wall of algae is not made up of galactose and mannans.

Option C:

The cell wall of algae is not made up of proteins.

Option D:

The cell wall of algae is not made up of proteins.

Final answer: Algae have cell walls made up of cellulose, hemicellulose, and pectins.