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Because onion bulb develops underground and it is meant for food storage to overcome adverse environmental conditions. The skin of the bulb need not loose water and take part in gaseous exchange. Therefore, it does not have guard cells and stomata.

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Did onion has chloroplast?

Onion leaves have chloroplast but not the vegetable(bulb)....


What structure can be seen in Elodea leaf but not present in epidermal cells of onion cells?

Chloroplasts can be seen in Elodea leaf cells but not in the epidermal cells of onion cells. Chloroplasts are responsible for photosynthesis in plant cells, containing chlorophyll that captures sunlight for energy production. Onion epidermal cells do not contain chloroplasts as they do not perform photosynthesis.


Does a onion cell contains a chloroplast?

Onion bulb does not have chloroplasts.Onion leaves have chloroplasts.


Why is there no chloroplast in the onion bulb?

Chloroplast is found in parts of plants exposed to sunlight, where it is used in photosynthesis. Onion bulbs are not normally exposed to sunlight, so there is no need for chloroplasts in the bulb.


Why onion cells do not contain chloroplast?

Because an onion develops in the ground, and chloroplasts develop in the sunlight. Therefore no chloroplasts form. Think of it this way: Tree leaves contain chloroplasts because they contain chlorophyll in order for the leaves to turn colors. But who has ever heard of an onion changing colors because it's fall?! Onions dont need chloroplasts, so they dont have them.


Why do onion cells do not have chloroplast?

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.


What plant organ is modified to produce onion bulbs?

The bulb of an onion is formed from modified leaves. While photosynthesis takes place in the leaves of an onion containing chloroplast, the little glucose that is produced from this process is converted in to starch (starch granules) and stored in the bulb.


What plant organelle is missing from the onion cell?

The onion cell is missing chloroplasts, the organelles responsible for photosynthesis in green plants. Onion cells do not contain chlorophyll, so they do not require chloroplasts for photosynthetic processes.


Does an onion bulb have an apical bud?

Yes, An onion bulb does have an apical bud.If you cut an onion in half, you will see it in the center of the bulb


Do the cells of the onion bulb possess chloroplasts?

Onions are the root bulbs of onion plants. The plant itself contains chloroplasts, which cause the green colour, whereas the onion bulb itself contains other pigments and few, if any, chloroplasts.


Is onion a stm or a root?

The onion is a bulb.


Is a leek a stem or a root?

An onion, strictly speaking, is a 'bulb' and is a stem.