LAB: Mollusks Flashcards
1
Q
Mollusks
A
- soft bodied invertebrates
- coelomates, complete digestive system
- Body
- Foot - locomotion
- Mantle - secrete shells
- Visceral mass
- Open circulatory system
2
Q
Phylum
A
Mollusca
3
Q
Chitons
A
- Found in tidal zones of marine areas
- Shell w/ eight overlapping plates
- Herbivores
- Radula - scrape algae
4
Q
Gastropods
A
- Snails and slugs
- Exhibit torsion
- Foot secretes mucus
- Many have dorsal shells secreted by the mantle
5
Q
Cephalopods
A
-
Advanced mollusks
- Squid, octopus, nautilus
- well-developed central nervous system
- high degree of cephalization
- closed circulatory system
- Have chromatophores (pigmented cells) which can change colors rapidly
6
Q
Squid
A
- Fast moving
- Predators
- Beak
- Ink clouds - defense
7
Q
Octopus
A
- 8 arms
- “walk”
- “swim”
- “jet”
8
Q
Nautilus
A
- only cephalopod with external shell
- Shell is chambered
9
Q
Bivalves
A
- Clams, mussels, scallops, and oysters
- Have 2 part hinged shell (valve)
- Filter feeders
10
Q
Clam Dissection and Anatomy
A
