Question

identify the labeled structures. a: b: c:

Explanation:

A is the rigid outer - layer, typical of plant cells, called the cell wall. B has a characteristic double - membrane and is the powerhouse of the cell, the mitochondrion. C is the dark - staining region within the nucleus, the nucleolus, involved in ribosome synthesis.

Answer:

A: Cell wall
B: Mitochondrion
C: Nucleolus