specialised cells

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  • specialised cells
    • root hair cells
      • tiny  hair like extension to increase surface area of the cell so it can absorb water and ions more efficiently.
    • palisade cells
      • alot of chlorophyll in chloroplasts on the surface of the leaf to absorb light for photosynthesis
    • xylem cells
      • hollow cells with no cytoplasm so they can transport water  through the stem and root
    • ovum
      • large  so it is able to contain extra food stores for the developing embryo
    • red blood cells
      • no nucleas so there is extra room for heamoglobin which bind with oxygen from the air
      • biconcave shape so that they have a large surface area to absorb more oxygen
    • sperm cell
      • large nucleus which contains genetic information to be passed on.
      • tail which allows it to swim to the egg
    • nerve cells
      • long length for transmitting signals over long distances
      • insulating layer around axon for speeding up transmission of a nerve impulse
  • no nucleas so there is extra room for heamoglobin which bind with oxygen from the air

Comments

#tennisgod

good diagram, very helpful

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