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Chloroplasts contain chlorophyll which help to make the food for the plant (glucose). First, chloroplasts are essential for the process of photosynthesis. You need to know that the onion bulb we refer to in daily life grows underground, which is not exposed to the sunlight, it only stores food for the plant. And you also need to know, the process of photosynthesis, requires lights. Because onion bulbs are underground, what is the use of having chloroplasts? The onion plants have green shoots where there are chloroplasts. You can simply tell that there is no chloroplast in onion bulbs because they are not green. Onion bulbs just basically shares a similar environment with root cells.You can check the images in Google and you actually see that onion cell does not have any chloroplasts.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThe part of the onion that we eat doesn't contain chloroplasts, but it isn't the entirety of the plant. Most plants have other non-photosynthetic structures that play a role in support or storage. For example, the bark of a tree doesn't have chloroplasts, but the leaves do. Same with the onion: it has a bulb (the part we eat, grown on or under the ground) that stores energy and minerals. But it also has vertical shoots that grow above ground. These shoots contain chloroplasts and carry out photosynthesis.
Wiki User
∙ 14y agoThe bulb of the onion is below ground where there is no sunlight, therefore it would be pointless for the bulb to contain chlorophyll. The leaves of the onion plant do in fact have chlorophyll
Wiki User
∙ 12y agoChloroplasts contain chlorophyll which reflects sunlight to make plants green, but onion grow underground and are not exposed to sunlight.
Wiki User
∙ 13y agoBecause they do not have
green chloroplasts. Since they are underground and do not do photosythesis.
Wiki User
∙ 9y agoOnion bulb cells are not photosynthetic.They do not get sunlight.
Wiki User
∙ 10y agoOnions are under ground structures.They do not need chloroplasts.
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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.
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.
Where in the cell do you find chloroplasts?
i dont no were u find it
What 2 plant cells don't have chloroplasts?
onion cells dont contain chloroplasts as they are underground so cant photosynthesise
Why doesn't photosynthesis occur in animals?
The process of photosynthesis occur in plant cells mainly because of the presence of special cells known as chloroplasts. These chloroplasts contain a green pigment known as CHLOROPHYLL. This pigment makes use of energy from sunlight to split water molecules into their constituent hydrogen and hydroxide ions,(a process known as PHOTOLYSIS OF WATER). The hydrogen ions thus react with the carbon dioxide within the cells to form carbohydrates. On the contrary, animal cells lacks this chloroplasts, hence the absence of CHLOROPHYLL. Since there is no chlorophyll, there is on mechanism for the photolysis of water that will lead to the formation of carbohydrates, thus photosynthesis does not occur in animal cells.
Why do you see chloroplasts in the Elodea cell but not the onion cell?
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 needchloroplasts, so they dont have them.
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.
What are two features that plants cells have that animal cells do not?
plant cells have chlorophyll that i think a cell wall but chlorophyll is the main reason that they are greenRead more: What_does_a_plant_cell_have_that_a_animal_cell_does_not_have
Why do onion cells look so different than human cheek cells?
Onion cells are plant cells, so they have a cell wall and more angular shape (but no chloroplasts, like some plant cells, since they are not part of the photosynthesizing part of the onion plant) Human cheek cells are animal cells, so the biggest difference is that they have no cell wall and thus a rounder shape.
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.
Where in the cell do you find chloroplasts?
i dont no were u find it
What 2 plant cells don't have chloroplasts?
onion cells dont contain chloroplasts as they are underground so cant photosynthesise
What structures are in an onion cell that confirm it is a plant cell?
i dont know srry byee..
Why do plant cells have chloroplasts and a rigid cell wall and animals cells dont?
The chloroplasts make the plant stem green.
A plant cell has two parts that animal cells do not have they are the?
These parts are the cell wall (animal cells just have a cell membrane) and the vacuole. Plants also have chloroplasts which animal cells do not have.
Why doesn't photosynthesis occur in animals?
The process of photosynthesis occur in plant cells mainly because of the presence of special cells known as chloroplasts. These chloroplasts contain a green pigment known as CHLOROPHYLL. This pigment makes use of energy from sunlight to split water molecules into their constituent hydrogen and hydroxide ions,(a process known as PHOTOLYSIS OF WATER). The hydrogen ions thus react with the carbon dioxide within the cells to form carbohydrates. On the contrary, animal cells lacks this chloroplasts, hence the absence of CHLOROPHYLL. Since there is no chlorophyll, there is on mechanism for the photolysis of water that will lead to the formation of carbohydrates, thus photosynthesis does not occur in animal cells.
Green coloured catalyst in a plant cell?
Sounds like chlorophyll
