invertebrate

Question 1

An animal with a backbone

Answer 1

Vertebrates

Question 2

An animal without a backbone

Answer 2

Invertebrates

Question 3

an organism that eats other organisms or organic matter

Answer 3

Consumer

Question 4

a mass of nerve cells

Answer 4

Ganglion

Question 5

a digestive tract

Answer 5

Gut

Question 6

body cavity that contains internal organs

Answer 6

Coelom

Question 7

most complex animals that the two sides of its body mirror each other

Answer 7

Bilateral Symmetry

Question 8

body is organized around the center

Answer 8

Radial Symmetry

Question 9

body is not organized around a center

Answer 9

Asymmetry

Question 10

an asymmetrical animal

Answer 10

Sponges

Question 11

invertebrates that have stinging cells

Answer 11

Cnidarians

Question 12

the simplest worms

Answer 12

Flatworms

Question 13

tiny worms that break down dead plants and animals / can be parasites

Answer 13

Roundworms

Question 14

invertebrates that mostly live in water some live on land

Answer 14

Mollusks

Question 15

a circulatory system in which the circulatory fluid is not contained entirely within vessels

Answer 15

Open circulatory system

Question 16

a circulatory system in which the heart circulates blood through a network of blood vessels that form a closed loop

Answer 16

Closed circulatory system

Question 17

a segmented worm

Answer 17

Annelid worms

Question 18

a hard external supporting structure

Answer 18

Exoskeleton

Question 19

an eye composed of many light detectors

Answer 19

Compound eye

Question 20

a feeler that sences touch taste and smell

Answer 20

Antenna

Question 21

a phase in the life cycle

Answer 21

Metamorphosis

Question 22

an internal skeleton made of bone or cartilage.

Answer 22

Endoskeleton

Question 23

a system of canals that has water flow through the body

Answer 23

Water vascular system