Mollusca

Question 1

habitat

Answer 1

FW,SW,terrestial

Question 2

basic anatomy

Answer 2

unsegmented,contain mantle(secretes CaCO3 shell), feed with radula

Question 3

how do classes differ?

Answer 3

based on shell structure and foot

Question 4

C. Caudofoveata and C. Solenogastres

Answer 4

-worm like, marine, some scales, mental reduce, no shell, some have radula

Question 5

C. Bivalvia

Answer 5

-contain two shells
-filter feeders
FW clams have parasitic larva (on fish)

Question 6

C. Gastropodia

Answer 6

• crawl around on their stomach
• 1 piece shell often coiled
• feed with radula
• herbivores

Question 7

C. Cephalopodo

Answer 7

• octopus,squid, and nautiluses
• big well developed eyes
• 3 brains (master, foot brain, visceral hump brain)

Question 8

C. Polyplacophora

Answer 8

• chitons
• contain 8 shells
• radula
• no head
• no brain
• slow and good at camouflage

Question 9

C. Scaphopoda

Answer 9

• tusk a tooth shell
• contain food and move tentacle around
• cilia pass food to mouth
• respiratory system is reduced to respiratory ridges

Question 10

C. Monoplacophora

Answer 10

• one shell
• vesitigal segmentation
• extict (250 million years)