ILTS Elementary/Middle Grades (110) Practice Test 2026 - Free Practice Questions and Study Guide

The correct answer is that plant cells are characterized by having rigid, tough cell walls made of cellulose. This structural feature provides plants with support and protection, allowing them to maintain their shape and withstand various environmental stressors.

In contrast, while prokaryotic cells, such as bacteria, do possess cell walls, these walls are not as rigid or complex as those found in plant cells. Prokaryotic walls are typically made of peptidoglycan and serve different functions. Eukaryotic cells include both plant and animal cells, but animal cells lack a rigid cell wall, relying instead on a flexible plasma membrane. Therefore, the unique rigidity and toughness of plant cell walls set them apart, making plant cells the correct response.