: Why do some Insects go from Larva stage to Pupa stage and then metamorph into adult Insects?

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: Why do some Insects go from Larva stage to Pupa stage and then metamorph into adult Insects?

In: Biology

Because metamorphosis allows one species to occupy two ecological niches. For example, the larvae can eat leaves while the adults can drink nectar. A particularly common niche pairing is flying adults and water-living larvae. This means that the adults won’t be competing for resources with their own children, allowing the species to sustain a larger population.