Question

Zoom in to 400x on the onion root tip. You should be able to see square-like shapes with dark areas in the center. Based on what you have learned about cells and cell structure, what are the dark areas in the middle of each square? Define its function.

Answer 1

Answer: vacuole

Explanation:

An onion is a multicellular (consisting of many cells) plant organism.As in all plant cells, the cell of an onion peel consists of a cell wall, cell membrane, cytoplasm, nucleus and a large vacuole. The nucleus is present at the periphery of the cytoplasm. The vacuole is prominent and present at the centre of the cell. It is surrounded by cytoplasm. The presence of a cell wall and a large vacuole are indicators that help identify plant cells, such as seen in the onion peel. Therefore the dark areas in the middle of each square is the vacuole.

It's function includes

- it provides structural support to the plant cell

- serves as food storage centre of the cell,

- supports in waste disposal from the cell.