Which of the following is found in animal cells but not in plant cells?

Lysosomes are organelles that are prevalent in animal cells and play a crucial role in the digestive processes of the cell. They contain enzymes that break down waste materials, cellular debris, and even foreign pathogens. This ability to digest and recycle cellular components makes lysosomes essential for maintaining cellular health and function.

In contrast, plant cells usually do not have lysosomes because they contain a large central vacuole that performs a similar role. The vacuole holds waste products and helps in the recycling of cellular materials, thus reducing the need for lysosomes in plant cells.

The other options, such as chloroplasts, cytoplasm, and the cell wall, are either unique to plant cells (like chloroplasts and the cell wall) or present in both plant and animal cells (like cytoplasm). This distinction highlights the specific functionalities that lysosomes provide in animal cells, emphasizing their role in cellular maintenance that is not required in the same way in plant cells.