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At some point, a group of cells with a nucleus that obtain resources begin to reproduce. Is it at this point we have an "animal?"
This lesson examines the development and features of lower invertebrates. Students will examine patterns of tissue development and other physical characteristics (like body cavities) of simple marine animals.
Warm Ups, etc:
Phylogenetic Tree - students copy diagram that introduces themes of development and patterns of evolution
Pineapple Under the Sea - review questions about sponges
Porifera and Cnidaria - students attempt to identify examples of sponges and a variety of cnidarians based on images
How Do We Relate? - students identify the ecological relationships described in the questions
Instruction, Presentations, Assignments, Activities, etc:
Diagram - Development (plan book) (Notes)
Handout - Porifera
Preserved samples and found sponges
Phylum Cnidaria (diagrams on notes)
https://www.youtube.com/watch?v=7WJCnC5ebf4&feature=related - slow motion of sting (link also in presentation)
Preserved samples of cnidaria
Web Resources:
https://www.youtube.com/watch?v=k_9MTZgAhv0
https://www.youtube.com/watch?v=7WJCnC5ebf4&feature=related - slow motion of sting
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