There is only a single layer of cells in onion tissue. However, sometimes the tissue can fold over itself and appear to have two layers.
2 layers
The main part of an onion, the thick layers, can have many layers of cells stacked on top of each other. Between the layers, there is a thin skin (onion skin) which is a single layer of cells. The single layer makes it easy to for a student to study the cell structure under a microscope.
When observing an onion cell under the microscope, it appear to be long an oval in shape. Staining the cell will make the chromosomes attain a deep purple color.
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Tissue paper maney of layers and thick
The easiest way to peel an onion is to cut off the top and bottom, make a vertical slit in the skin, and then peel off the outer layers.
The root cell's job is to gather minerals and and take it up the roots to the onion.
When observing an onion cell under the microscope, it appear to be long an oval in shape. Staining the cell will make the chromosomes attain a deep purple color.
Oh, dude, it's like comparing apples and oranges... or in this case, frogs and onions. Frog cells come from frogs, obviously, and onion cells come from onions. They have different structures and functions, but hey, at the end of the day, they're both just cells, man.
Platyhelminthes have three tissue layers: the outer ectoderm, the middle mesoderm, and the inner endoderm. This is known as triploblastic organization. These layers give rise to various organs and tissues that make up the flatworm's body.
Adipocytes are the cells that make up adipose tissue
What happens is the alcohol starts to shred the onion. Next alcohol is soaked up inside the onion which starts to make the onion shrink. The cell can't take the acid that goes in it shrinks and dissolves.