Problem
• What are 4 characteristics that all organisms in the Kingdom Animalia have in common?
• What Phylum has no symmetry?
• What Phyla are radially symmetrical?
• What are the 3 layers of true tissue in animals called, and what does each eventually become?
• What is the term used for organisms that have 3 germ layers?
• What Phyla do lack true tissues?
• In Porifera (sponges), what is another term for collar cells?
• In Porifera, what are 2 functions of collar cells?
• How do Porifera reproduce?
• What are spicules? What is their function?
• What are 3 types of spicules in Porifera?
• What is the path of water through a sponge?
• What does it mean to be a sessile filter-feeder?
• Are Cnidarians filter-feeders?
• What are the 2 body forms of Cnidarians?
• D all Cnidarians have both body forms?
• What is the advantage of being radially symmetrical?
• What is the body form of Hydra?
• What is a cnidocyte?
• What is a nematocyst?
• How do Cnidarians acquire and digest food?
• How do Cnidarians reproduce?
• Are Cnidarians mobile or sessile? Explain.