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.
The reason why people add iodine to onion skin is so that its gets a color and so you can see it better.
Onion cells do not have chloroplasts because the onion is underground where there is no light. Without light chloroplasts have no purpose, so onion cells just don't have them.
Why are there so many layers in the atmosphere
Onion cells are approximately the same shape because they are packed tightly together in the layers of an onion bulb. The cell walls of onion cells help maintain their shape and structure. Additionally, the pressure exerted by neighboring cells contributes to their uniform appearance.
The bulb of an onion is that round or roundish vegetable that is composed of many concentric layers, that causes a burning sensation in your eyes when you chop it up, and that is usually what people cook when they use onion in their recipes - although the green leaves of the onion, also called scallions, can be eaten too.
The onion's skin structure is natuarally arranged into thin layers, making it very convenient to prepare for the microscope slide. The process of slicing other plants into thin layers can be tedious, so for non-specialized, lower budget studies like schools, the onion is a natural choice.
Depends how big the onion is and how wide you want the slices. So many variables...
I would say he is like an onion because he has many layers he even said so himself in the first shrek movie. He may seem like a scary mean monster but he is actually very sweet and nice.
I would say he is like an onion because he has many layers he even said so himself in the first shrek movie. He may seem like a scary mean monster but he is actually very sweet and nice.
That would depend on what layers are there, what sbstance composeseach layer, where the layers are geographicaly. So many question, so little idea of what is required
two layers but so have three