Onion cells do not contain chloroplasts. Can you think of a reason why onion cells have no chloroplasts.?
   

Examine the Photo on the right:

The photograph shows plant cells at low power.

These cells have been stained to in order to show greater detail

Each cell has a central nucleus.

Clearly visible is a cell wall surounding each cell


Examine the Photo on the right:

The photograph shows plant cells when viewed at high power

You should notice that the cells are three-dimensional

The nucleus and the cell wall are clearly visible

 

Examine the diagram on the right:

This diagram represents a typical plant cell.

The nucleus is responsible for reproduction.

The vacuoles store food

The cytoplasm is the jelly like material which makes up the cell

Most plant cells above the ground also have chloroplasts. These are responsible for making food through the process of photosynthesis