Higher Invertebrates

Question 1

Peanut Worms

Answer 1

Spinicula

Question 2

Round Worms

Answer 2

Nematoda

Question 3

Segmented Worms

Answer 3

Annelida

Question 4

Priapulids

Answer 4

Priapulida

Question 5

Arrow Worms

Answer 5

Chaetognatha

Question 6

Acorn Worms

Answer 6

Hemichordata

Question 7

Echinoderms

Answer 7

Seastars

Question 8

Crabs

Answer 8

Lobsters

Question 9

Chordata

Answer 9

Tunicates

Question 10

Mollusca

Answer 10

Snails

Question 11

Gastropods

Answer 11

Snails

Question 12

Bivalves

Answer 12

Clams

Question 13

Cephalopods

Answer 13

Squid

Question 14

invertebrate

Answer 14

An animal without a backbone

Question 15

Vetebrate

Answer 15

An animal with a backbone

Question 16

Worm

Answer 16

Animal with a cylindrical body

Question 17

Segmentation

Answer 17

Division of the body of an organism into a series of similar parts

Question 18

Water Vascular System

Answer 18

A network of hydraulic canals unique to echinoderms that branches into extensions called tube feet

Question 19

Hydrostatic Skeleton

Answer 19

A fluid skeleton in many soft-bodied invertebrates

Question 20

Radula

Answer 20

Tongue-shaped structure used for feeding

Question 21

Gill

Answer 21

An organ that removes oxygen from water

Question 22

Notochord

Answer 22

A flexible rod that supports a chordate’s back

Question 23

Pharyngeal Gill Slits

Answer 23

all chordates share this

Question 24

Muscular Post Anal Tail

Answer 24

A tail posterior to the anus; found in chordate embryos and most adult chordates.

Question 25

Dorsal Hollow Nerve Tube

Answer 25

a neural structure found in chordates some time in their life cycle