-
Phylum Mollusca
- Classes:
- Polyplacaphora
- Gastropoda
- Bivalvia
- Cephalopoda
-
Class Polyplacophora
- Phylum Mollusca
- Oval shaped, shell divided into 8 dorsal plates
- Ex. Chitons
-
Class Gastropoda
- Phylum Mollusca
- Largest Molusk
- Most marine
- Ex. Snails, slugs
-
Class Bivalvia
- Phylum Mollusca
- Hinged shell
- Most are suspension feeders
- Ex. clams, oysters, scallops
-
Class Cephalopoda
- Phylum Mollusca
- Shell reduced, internal, or non-existent
- Agile carnivores
- Beak like jaw to crush prey
- Ex. squid, octopi
-
Arthropods
- Contain hard exoskeleton
- Open circulatory
- Tubular digestive
- Many forms of gas exchange
-
Phylum Myriapoda
- Arthopods
- Millipedes-worm like body with 2 pairs of legs per segment, feed on decaying plant matter
- Centipedes-1 pair of antenna and most with mandible, 1 pair of legs per body segment, carnivores
-
Phylum Hexapoda
- Arthropods
- Greater diversity than all other life forms combined
- Tracheal gas exchange
- Metamorphosis during development
|
|