chapter 9

Question 1

space between the mantle and the body

Answer 1

mantle cavity

Question 2

region of body that contains head w mouth and foot to move

Answer 2

head foot

Question 3

holds the bulk of the digestive reproductive excretory and respiratory systems

Answer 3

visceral mass

Question 4

tiny teeth used to scrape food particles off a surface and into mouth

Answer 4

radula

Question 5

having one valve or shell

Answer 5

univalve

Question 6

hinged shell

Answer 6

bivalve

Question 7

bump on the end of a bivalve shell

Answer 7

umbo

Question 8

moves limbs or part of body toward another part

Answer 8

adductor muscles

Question 9

water enters

Answer 9

inhalant siphon

Question 10

water exits

Answer 10

exhalent siphon

Question 11

internal shell of a squid

Answer 11

pen

Question 12

a cell that contains pigment

Answer 12

chromatophores

Question 13

internal skeleton

Answer 13

endoskeleton

Question 14

external covering of a body in invertebrate animals

Answer 14

exoskeleton

Question 15

aquatic animal that feeds on small specks of organic matter

Answer 15

deposit feeders

Question 16

animals that feed by straning suspended matter and food particles from water

Answer 16

filter feeder

Question 17

outer enclosing layer of tissue

Answer 17

mantle