The cell of an onion bulb can be differentiated from a cheek cell by the presence of
plasmalemma
chloroplast
cell wall
nucleus
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The correct answer is C. cell wall.
An onion cell is a plant cell, and a cheek cell is an animal cell. The main difference between plant and animal cells is that plant cells have a cell wall made of cellulose, which provides rigidity and support to the cell. Animal cells do not have a cell wall, but only a cell membrane that surrounds the cytoplasm. The cell wall is visible as a thick outer layer in onion cells under the microscope. The other options, plasmalemma, chloroplast, and nucleus, are not unique to onion cells or cheek cells. Plasmalemma is another name for the cell membrane, which both types of cells have. Chloroplasts are organelles that perform photosynthesis, but they are not present in onion cells or cheek cells, as neither of them are green. Nucleus is the organelle that contains the genetic material, and both onion cells and cheek cells have a nucleus, although it may be more prominent in cheek cells.
Thanks for your contributions. Correction has been made, the correct answer is C.
