1. Lecture 5 Animal Evolution – The Invertebrates

2. vi. Specialized developmental stages Many undergo metamorphosis. job of surviving and reproducing divided into may different stages of development. juvenile; a miniaturized version of the adult that changes in size & proportions until reaching sexual maturity.

3. Metamorphosis Transformation of an immature stage to adult through tissue reorganization and remodelling of parts. Immature stages, extensive eating growing fast Mature stages; specializes in reproduction and in dispersal of the new generation.