Which kingdom includes organisms that are typically sessile and have cellulose-based cell walls?

• A. Animalia
• B. Plantae
• C. Fungi
• D. Protista

Answer: (B)

Sessile lifestyle and cellulose-based cell walls are defining features of plants. Most plants stay fixed in one place, anchored by roots and growing in place rather than moving around. Their cells are wrapped in cellulose, a strong polysaccharide in the cell wall that provides rigidity and support for upright growth. Animals lack cell walls, which is why they can move. Fungi have cell walls too, but they’re made of chitin, not cellulose, so they don’t fit the description. Protists are a diverse group with varied cell wall materials and many are motile, so they don’t universally match this combination either. Therefore, the kingdom that includes organisms typically sessile and with cellulose-based cell walls is Plantae.