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Onion cells were stained with iodine because they contain starch, which reacts with iodine to produce a blue-black color, allowing for better visualization of the cells. In contrast, rhubarb cells do not contain significant amounts of starch, so staining with iodine would not yield a noticeable color change, making it unnecessary for observation. Thus, iodine staining is used selectively based on the presence of starch in the cells being examined.
What else can I help you with?
What does effect iodine have on the onion cells?
Iodine is often used to stain onion cells to make the cell structures more visible under a microscope. The iodine solution will stain specific cell components such as the cell walls and starch grains, allowing for easier observation and analysis of the cells.
Do onion cells still have chloroplasts when they have iodine on them?
The iodine has no connection as to whether the cells have chloroplasts or not. If the cells are green, then they do have them. Adding iodine doesn't change that fact. Not all cells of the plant have chloroplasts. The ones in the soil don't so if you are working with the bulb, it doesn't have chloroplasts in the first place.
What is the effect of iodine on onion cell?
Iodine solution is usually used for starch test. It colors the cell blue-black if the starch is present. Onion does not have starch. Hence it will not turn blue-black when iodine solution is added. However it does have its use in staining the cell.Similar questions:Does_onion_juice_contain_starch
What cell structures can be seen in a stain onion cell?
The structure that is seen is the cell wall. This keeps the shape of the cell and is only found in plant cells. The organelles that can be see in a stained onion cells all depends on your microscope. Under a x400 light microscope we could see the cell wall, cell membrane, nucleus and cytoplasm,
What is a good substiute stainfor looking at onion root tips under a microscope?
A good substitute stain for looking at onion root tips under a microscope is iodine solution. This stain will help to visualize the cells more clearly by highlighting the cell walls and starch grains present in the root tips.
Why do you put iodine on onion not rhubarb?
Iodine is used to test for the presence of starch in a substance. Onions contain starch, which reacts with iodine to produce a blue-black color. Rhubarb does not contain a significant amount of starch, so it will not produce the same reaction with iodine.
Why are cells stained with iodine solution?
Cells are stained with iodine solution to visualize the presence of starch. Iodine reacts with starch to form a bluish-black complex, making it easier to visualize and distinguish starch-containing structures within the cell, such as amyloplasts or starch granules.
What does effect iodine have on the onion cells?
Iodine is often used to stain onion cells to make the cell structures more visible under a microscope. The iodine solution will stain specific cell components such as the cell walls and starch grains, allowing for easier observation and analysis of the cells.
Which stain you should use to stain onion peel?
To stain onion peel cells, you should use a stain called iodine. Iodine is commonly used to stain cells because it binds to starches and glycogen in the cells, making the cells more visible under a microscope.
How did the iodine solution affect the image of the onion cells.?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did the iodine solution affect the image of the onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did the iodine solution affect the image the onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did iodine solution affect the image of the onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did the iodine solution affect the image of the of onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did the iodine solution affect the image of onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
What color does iodine turn a onion?
When iodine comes into contact with starch, it forms a blue-black complex. Therefore, if you were to apply iodine to a cut onion, the starch present in the onion cells would react with the iodine, turning the onion a blue-black color. This color change is a common test for the presence of starch in biological samples.
Which parts of the onion cells stood out the most after they were stained?
Only you know that because you did the experiment not us.
