Lab 10: Biodiversity Part II

• Porifera: 
• simple organisms that lack nervous or circulatory systems and have a single opening digestive cavity
• marine organisms
• filter feeders
• Cnidaria:
• jellyfish, hydroids, corals
• sedentary
• Platyhelminthes:
• flatworms
• lack body cavity, circulatory and respiratory organs 
• parasitic
• Annelida 

• segmented worms
• parapodia, feel like body parts
• clitellum for reproduction
• Arthropoda:
• jointed food/limbs
• mosquitoes
• Echinodermata:
• link between invertebrates and the vertebrates
• lack bony skeleton but have similar tissue development
• Chordata:
• invertebrate
• knife shaped body
• Chordata:
• fish
• cartilaginous fishes 
• breathe through gills
• fresh water and marine
• Amphibia:
• lungs but also breathe through skin
• dramatic population declines
• turtles, lizards, snakes, crocs, dinos
• 4 limbs
• Aves:
• birds
• lack teeth, hollow bones, possession of 4 chambered heart, feathers
• Mammalia:
• mammals 
• hair and mammary glands