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16 June, 01:23

Sort the features and characteristics by the groups they are found in. metamorphosis amniotic eggs ectothermic scales spinal cord gills in adults lungs in adults external fertilization

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  1. 16 June, 03:54
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    Metamorphosis - amphibians, fishes, insects

    • Biological process of animal's growth and physical development through sages characterized by the change in body structure

    Amniotic eggs - reptiles, birds, mammals

    • The eggs are not laid in the water and contain membrane that covers the embryo (amnion)

    Ectothermic scales - fishes, amphibians, reptiles, and invertebrates

    • Body temperature depends on environment

    Spinal cord - vertebrates

    • a hollow tube of nervous tissue part of CNS

    Gills in adults - insects, mollusks, crustaceans, amphibians, fishes

    • respiratory organ in aquatic animals

    Lungs in adults - birds, reptiles, mammals, some fishes and some amphibians

    • respiratory organ for the extraction of oxygen from the atmosphere

    External fertilization - amphibians and fishes, some invertebrates such as coral and sea anemones

    • fertilization outside of the female's body (usually in water).
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