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Reproductive - Males deposit sperm directly into females where fertilization occurs. This type of breeding, called internal fertilization, allows animals to breed on dry land. Another advantage is that fewer gametes are needed than if both sexes deposit their gametes in water. The change in body form as an insect grows to adult is called metamorphosis (Figure 16d). In some species such as the grasshopper, the larvae look like the adult; the animal simply gets larger as it matures. This type of change is incomplete metamorphosis. Species that undergo a complete reorganization of the body tissues exhibit complete metamorphosis, in which case they have 3 stages of development: larval stage, pupal stage, and adult stage, for example, the three stages of caterpillar, cocoon, and
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