Which of the following is a key difference between plant and animal cells?

The key difference between plant and animal cells lies in the presence of cell walls and plastids in plants. Plant cells are characterized by a rigid cell wall made of cellulose, which provides structural support and protection. This distinct feature sets them apart from animal cells, which have a flexible plasma membrane without a cell wall.

Additionally, plant cells contain plastids, such as chloroplasts, that are involved in the process of photosynthesis. Chloroplasts allow plants to capture sunlight and convert it into energy, whereas animal cells do not have this capability. Animal cells rely on heterotrophic methods for energy, obtaining nutrients from other organisms.

The presence of these structures—cell walls and plastids—is fundamental to the role of plants in their ecosystems and their ability to carry out photosynthesis, which is crucial for life on Earth. Understanding these differences helps in appreciating the unique functions and adaptations of plant cells compared to animal cells.