20. Answer in detail I

The cell organelles produce and supply most of the energy for the cell. Hence they are known as the powerhouses of the cell.

The structures that store food, water and chemicals are commonly called storage tanks. They are found in large sizes in the plant cells.

It is found in prokaryotic and eukaryotic cells. It holds and protects the cell, controls material movement in and out of the cell, and separates the cell from its surroundings. It is also known as the cell's gate.

The structure that surrounds and protects the cell. It serves as the supporter and protector of the cell.

It is a watery, gel-like substance containing all cell organelles. It's the part of the cell where you can see movement.