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1Define coelomate.


2Phylum Mollusca and Phylum Annelida are protostomes.
A)True
B)False


3List the four classes of Phylum Mollusca and give an example of each.


4


shell
5


mantle
6


foot
7


visceral mass
8


incurrent siphon
9


adductor muscle
Answer choices:
A)muscular structure used in locomotion
B)organ systems and sensory structures
C)muscle that opens and closes a bivalve shell
D)external skeleton that supports and protects an organism's body
E)tube in which water enters a bivalve for filter feeding
F)structure that covers the visceral mass and secretes the shell


10Most mollusks possess a rasping organ that scrapes food from rocks called a ________.
A)prostomium
B)umbo
C)mantle
D)radula


11Mollusks have ________ circulatory system, meaning that blood pools in sinuses and bather the organs directly.
A)no
B)an open
C)a closed
D)a simple


12All mollusks have a shell.
A)True
B)False


13How do bivalves feed?


14How do cephalopods feed?


15List the three classes of Phylum Annelida and give an example of each.


16Annelids have ________, small bristle-like appendages on their lateral and ventral surfaces.
A)parapodia
B)setae
C)septa
D)palps


17Earthworms move by alternately contracting and muscles against hydrostatic pressure in each segment.


18Phylum Annelida is , meaning their bodies are divided into repetitive segments and each segment contains parts of the circulatory, digestive, nervous, and excretory systems.


19Class Polychaeta has fleshy appendages that aid in respiration and locomotion called ________.
A)parapodia
B)setae
C)septa
D)palps


20In the Class Oligochaeta, copulating worms attach at their , meaning a series of swollen segments at the anterior third of the body.


21


gizzard
22


intestine
23


nephridia
24


pharynx
25


crop
26


esophagus
27


typhlosole
Answer choices:
A)transport food from pharynx to crop
B)suction and ingestion of food
C)fold of tissue that increases surface area for absorption in intestine
D)crush food
E)food storage
F)absorption of nutrients
G)collect and release excretory waste


28Earthworms have a dorsal nerve cord and a ventral blood vessel.
A)True
B)False


29Class Hirudinea produces a or sperm packed which is injected during copulation.


30Which Phyla are deuterostomes and which are protostomes?
a. Echinodermata
b. Chordata
c. Mollusca
d. Arthropoda
e. Annelida
f. Hemichordata





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