• EXCRETION IN PLANTS
    BIOLOGY

    EXCRETION IN PLANTS

    There are no special excretory organs or systems in plants. The plants as living things do carry out excretion. Elimination of certain waste takes place through the stomata and lenticels. The main waste products of plants are…

  • EXCRETION IN MAMMALS
    BIOLOGY

    EXCRETION IN MAMMALS

    There are four types of excretory organs used by mammals. These are: lungs, skin, liver and kidneys. The lungs excrete water vapour and carbon dioxide, the liver excretes bile pigments called bilirubin (derived from the decomposition of…

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