All organisms are made of cells. An onion is and organism, hence all parts of an onion are made of cells.
The cells in an onion tip but not the onion itself are usually actively dividing cells located at the growing tip of the onion root, known as the root cap cells. These cells help protect the delicate meristematic cells responsible for root growth and can often be found in the root zone of plants.
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An onion cell has a cell wall and a large central vacuole, both of which are not present in mammalian blood cells. Additionally, onion cells have chloroplasts for photosynthesis, while blood cells do not contain chloroplasts.
Cheek cells are typically larger than onion cells. Cheek cells are human epithelial cells that make up the inside lining of the mouth, while onion cells are plant cells found in the epidermis of onion bulbs. Cheek cells are usually around 30-40 micrometers in size, while onion cells are generally smaller at around 0.1-0.2 millimeters.
An onion cell is a plant cell, thereby it is eukaryotic. Prokaryotic cells are only found by bacterias.
because it is only found in green parts of plants
Onion cells are eukaryotic, meaning they have a true nucleus that houses their genetic material. Prokaryotic cells, like those found in bacteria, lack a true nucleus and other membrane-bound organelles.
No, you cannot observe chloroplasts in onion cells because onion cells do not contain chloroplasts. Onions belong to a group of plants known as monocots, which typically lack chloroplasts in their cells. Chloroplasts are mostly found in the cells of green plants that undergo photosynthesis.
No chloroplasts in cheek and onion cells
Between the 2 cells that are cheek and onion cells, the one that has a regular arrangement and structure are onion cells. Cheek cells have an irregular shape.
The structures that are found in the hydrilla which are not found in the onion cell are chloroplasts, specifically the stomata and chlorophyll. Onions lack these structures because they grow underground.
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.