Component of plant cell absent in animal cell is

The correct option is "Cell wall".

To understand why this is the correct answer, let us compare the structures of plant and animal cells step-by-step:

1. Cell Wall:
The cell wall is a rigid, outer layer surrounding the cell membrane in plant cells. It is primarily composed of cellulose and provides structural support, protection, and rigidity to the plant. Animal cells do not have a cell wall; they only have a flexible outer cell membrane, which allows them greater mobility and flexibility in shape. Therefore, the cell wall is absent in animal cells.

2. Cytoplasm:
The cytoplasm is the jelly-like fluid that fills the inside of a cell, suspending the organelles. It is present in both plant and animal cells as it is the site for most chemical reactions and cellular activities.

3. Cell Membrane:
Also known as the plasma membrane, this is a semi-permeable barrier that controls the movement of substances in and out of the cell. It is present in both plant and animal cells. In plant cells, it lies just beneath the cell wall.

4. Nucleus:
The nucleus is the control center of the cell containing the genetic material (DNA). Since both plants and animals are eukaryotic organisms, their cells both contain a well-defined nucleus.

In conclusion, the component of a plant cell that is completely absent in an animal cell is the Cell wall.