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The average size of an animal cell is ~10 to 50 microns (a micron is 10^-6 meter). A cheek cell would fall apx. in that range, probably 30-50 microns. Cell size varies greatly in multi-cellular animal cells, though--the egg cell size of some animals is quite a bit larger--think of an ostrich egg, which is a single cell. Some neurons in your own body can be a couple of feet long!
Elodea is a small aquatic plant--you may see it in aquariums. Despite being much smaller than a human being, its cells are much larger, probably 100-150 microns. There is less variation in the cell shapes in Elodea as it is a simpler organism. Most Elodea cells are shaped like rectangular boxes. They are plants, so they have cell walls helping them maintain that shape.
The different types of cell present in the human body varies in their size. The length of the neuron could be more than a feet.The size of a cheek cell is estimated to be around 30 - 50 microns. So based on the location and function the size of the different cells present in the body varies.
Cells vary in shape and size. They may be oval, spherical, rectangular, polygonal, spindle shaped, star shaped, rod-shaped or totally irregular like the nerve cell.
cheek cells are called Epithelial Cells. They are the cells that cover our skin and line the internal cavities of the body. The average cell size for the human cheek sample is 57.72 um x 58.24 um. The cells are cuboidal in shape.The Cell theory states that the cell is the basic structural, functional, and developmental unit of life.
The American water weed i.e Elodea lives entirely underwater with the exception of small white flowers which bloom at the surface and are attached to the plant by delicate stalks. It produces winter buds from the stem tips that overwinter on the lake bottom. It also often overwinters as an evergreen plant in mild climates. In the fall, leafy stalks will detach from the parent plant, float away, root, and start new plants. This is the American water weed's most important method of spreading, while seed production plays a relatively minor role.
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