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Biology 11 PLO G1-2: Kingdom Animailia: Porifera, Cnidaria Worksheet Unit 9 Lessons 1 to 4 1. Use a Venn diagram (see Study Skill Technique web site) to compare and contrast the Phylum Porifera and the Phylum Cnidaria. (5 marks) PORIFERA CNIDARIA DIFFERENCES 2. Describe the process of filter feeding in a sponge. Please use words (2 marks) and a diagram (2 marks) in your answer. ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ ________________________ Biology 11 1 of 2 3. What are the ecological roles of sponges and cnidarians. (2 marks) ______________________________________________________ ______________________________________________________ 4. Use a comparison-contrast organizer (see Study Skill Technique web site) to compare and contrast polyp and medusa with respect to structure, general function, and motility. (6 marks) Cnidarian Form: Polyp Medusa Structure General Function Motility 5. What is the key advantage of the motile form in the life cycle of a Cnidarian? (1 mark) ______________________________________________________ 6. What is the evolutionary significance of multicellular (e.g. Cnidarian) versus colonial (porifera) life forms? (1 mark) ______________________________________________________ Biology 11 2 of 2 Total: __/19