Question

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

Explanation:

The cell wall is a tough, rigid layer that provides structural support and protection to plant cells, as well as some algal and bacterial cells. Centrioles are involved in cell - division in animal cells, the nucleus is the control center of the cell, and the cell membrane is a flexible layer that controls the movement of substances in and out of the cell.

Answer:

cell wall