Which one of the following organelles is not found in animal cells?

Animal cells are eukaryotic cells that contain various organelles but lack a cell wall [2]. The cell wall is a rigid outer layer found in plant cells, fungi, and bacteria, providing structural support and protection [1]. In contrast, animal cells are enclosed only by a flexible cell membrane (plasma membrane) [2]. Other organelles listed, such as the endoplasmic reticulum and lysosomes, are standard components of animal cells [3]. Specifically, lysosomes are often cited as being present in animal cells while being absent or rare in plant cells. While plant cells possess unique structures like chloroplasts, a large central vacuole, and a cell wall, animal cells rely on a cytoskeleton for structural integrity instead of a cell wall [2]. Therefore, the cell wall is the organelle not found in animal cells.

Sources

1. [2] https://nios.ac.in/media/documents/srsec314newe/lesson-04.pdf
2. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 2: The Invisible Living World: Beyond Our Naked Eye > 2.5 Why Is Cell Considered to Be a Basic Unit of Life? > p. 24
3. [3] https://en.wikipedia.org/wiki/Cell_(biology)