Sponge and Cnidarian Origins - A.docx PDF
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This document contains questions about the origins of sponges and cnidarians. It covers topics like the structure and behaviour of these organisms.
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A. SPONGES: Origins\ 1a. What typical animal things does a sponge lack?\ 1b What happens if you break a sponge apart with a sieve?\ 1c. What is the florescent dye demonstrating?\ Watch what happens to the floating particles on the journey through the sponge canals.\ 1d. Do you recognize the collar c...
A. SPONGES: Origins\ 1a. What typical animal things does a sponge lack?\ 1b What happens if you break a sponge apart with a sieve?\ 1c. What is the florescent dye demonstrating?\ Watch what happens to the floating particles on the journey through the sponge canals.\ 1d. Do you recognize the collar cells (choanocytes)? What do they look like?\ 1e. What happens when a particle runs into one of these flagellated cells?\ B. CNIDARIANS: Life on the move\ 2a. Describe their tricks for snaring their prey:\ 2b. Describe the battle between the two anemones:\ 2c. What does Stomphia do when attacked by the sea star?\ 2d. What are the 2 classic forms brought together in Preya?\ 2e. What does one jellyfish do when startled by a predator?
