In the coming weeks T will be learning about the Animal Kingdom. We have constructed an Animal Kingdom book and will be creating a one page summary for each Phylum.
Today we began studying the Cnidarian Phylum. The Phylum Cnidaria includes such diverse forms as jellyfish, hydra, sea anemones, and corals. Cnidarians have two basic body forms, medusa and polyp. Medusae, such as adult jellyfish, are free-swimming or floating. They usually have umbrella-shaped bodies. Polyps, in contrast, are usually firmly attached. They have tubular bodies; one end is attached to the substrate, and a mouth (usually surrounded by tentacles) is found at the other end. For our lab this week we studied the life cycle of sea jellies. Sea Jellies are unique cnidarians because they change body shape throughout their life cycle. We made models of sea jellies to demonstrate this transformation.
Polyp
Medusa
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