Question

which is a tough and rigid layer that surrounds plant cells, as well as some algal and bacterial cells?
cell wall
cytoskeleton
nucleus
cell membrane

Explanation:

The cell wall is a tough and rigid layer surrounding plant cells, as well as some algal and bacterial cells. It provides structural support and protection. The cell membrane is a flexible layer, the centriole is involved in cell - division in animal cells, and the nucleus is the control center of the cell.

Answer:

cell wall