Invertebrate Animal

Question 1

Vertebrates

Answer 1

have a backbone

Question 2

Invertebrates

Answer 2

do not have a backbone

Question 3

Consumer

Answer 3

an organism that eats other organisms or organic matter

Question 4

Ganglion

Answer 4

a mass of nerve cells

Question 5

Gut

Answer 5

the digestive tract

Question 6

Coelom

Answer 6

a body cavity that contains the internal organs

Question 7

Bilateral Symmetry

Answer 7

two sides of the body that are mirror to each other

Question 8

Radial Symmetry

Answer 8

its body is organized around the center like spokes on a wheel

Question 9

Asymmetry

Answer 9

you cannot draw a straight line to divide its body into two or more equal parts

Question 10

Sponges

Answer 10

simplest invertebrates

Question 11

Cnidarians

Answer 11

are more complex than sponges. Have complex tissues and a gut for digesting food

Question 12

Flatworms

Answer 12

all flatworms have bilateral symetry

Question 13

Roundworms

Answer 13

most species of roundworms are very small

Question 14

Mollusks

Answer 14

most mollusks fit into 3 classes

Question 15

Open circulatory system

Answer 15

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

Question 16

Closed circulatory system

Answer 16

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

Question 17

Annelid worms

Answer 17

are often segmented worms

Question 18

Exosceleton

Answer 18

is the external skeleton that supports and protects an animal’s body, in contrast to the internal skeleton

Question 19

Compound Eye

Answer 19

an eye consisting of an array of numerous small visual units, as found in insects and crustaceans

Question 20

Antenna

Answer 20

either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods

Question 21

Metamorphosis

Answer 21

Also called transformation. A change in the form and often habits of an animal during normal development after the embryonic stage.

Question 22

Endoskeleton

Answer 22

an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates

Question 23

Water vascular system

Answer 23

used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration