Post on 24-Feb-2016
description
Cladogram of Animals
Phylum PoriferaSponges – the simplest animal
Porifera
• most ancient group of animals (500 mya)• multicellular• heterotrophic• a few specialized cells• asymmetrical• invertebrate
Porifera
• means “pore bearers” since they have tiny openings all over body
• filter feeder - eat tiny, floating organic particles and plankton
• food and oxygen in, waste out• sessile - live permanently attached to a
location in the water
Phylum CnidariaJellyfish, sea fans, sea anemones, hydras, & corals
Lions mane jellyfish - grows up
to 8ft acrossthe tentacles can be over 100ft long
Cnidaria• aquatic organisms• radial symmetry• invertebrate• central mouth• coral polyps build calcium
carbonate structures coral reefs
• stinging cells (nematocysts) are arranged on tentacles and used to capture food (small planktonic animals)
Cnidaria• some individual, some colonial
Use Ch 26 and write the correct phylum and symmetry.
Use Ch 26 and match the correct phylum, picture and description.