Question

In plant cells, the cell wall has abundance of which polysaccharide?

• A. Chitin
• B. Cellulose
• C. Starch
• D. Glycogen

Hint:

Remember the distinct roles of major polysaccharides: Cellulose = Structure in plants; Chitin = Structure in fungi/insects; Starch = Energy storage in plants; Glycogen = Energy storage in animals.

Answer 1

The Correct Option is B

Step 1: Core Idea:
The question seeks the most prevalent polysaccharide in a plant cell wall's structure.

Step 2: Breakdown:
Let's examine the choices:
\[\begin{array}{rl} \bullet & \text{Chitin: This polysaccharide is structural in fungal cell walls and arthropod exoskeletons, NOT plant cell walls. } \\ \bullet & \text{Cellulose: This long-chain glucose polysaccharide is the main structural component, providing plant cell walls with rigidity and strength. It is the most abundant organic polymer globally. } \\ \bullet & \text{Starch: This is the primary energy storage polysaccharide in plants, stored in granules within the cytoplasm and plastids, NOT in the cell wall. } \\ \bullet & \text{Glycogen: This is the main energy storage polysaccharide in animals and fungi. } \\ \end{array}\]Therefore, cellulose is the abundant polysaccharide in plant cell walls.

Step 3: Conclusion:
Cellulose is the most abundant component of plant cell walls.