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biology

specialized cells

QuestionAnswer
What does specialized mean? They have a specific job to do. they have specific features to help them do their jobs.
Sperm cell Very small and streamline with a tail called a flagellum so that it can swim. the head contains enzymes that help it digest its way through the egg.
Ovum cell It is the largest and bulkiest specialized cell because no movement is needed in it, it just sits and waits for the sperm to fertilize it.
Ovum cell (cont) Once it is fertilized, it contains a yolk which is the food store for the young organism. once a sperm has reached the egg the coating quickly changes so that no more sperm can enter.
palisade cell the palisade cell is fond on the top of a leaf, and because it is so large, is great to complete photosynthesis. they are packed with chloroplast which contains a green pigment- which is what gives the leaf the green colour.
ciliated epithelial cell The ciliated epithelial line all the air passages, they have tiny hairs that filter the air as it flows through. the hairs sweep mucus with trapped dust and bacteria up to the back of the throat where it can be swallowed.
Root hair cell The length of the root hair cell increases the surface area of the root which help with absorption of water and minerals. its cell wall is very thin so it makes it easier for minerals to pass across it.
Created by: pipd