SPO7: Invertebrate Animal Diversity I

Question 1

organisms resemble a pie where several cutting planes produce roughly identical pieces. Such an organism exhibits no left or right sides. They have a top and a bottom (dorsal and ventral surface) only.

Answer 1

RADIAL SYMMETRY

Question 2

Organism has only one plane, called the sagittal plane, which divides it into roughly mirror image halves.

Answer 2

BILATERAL SYMMETRY

Question 3

Body shape lacking in symmetry, such as sponges

Answer 3

ASYMMETRICAL

Question 4

Body cavity arrangement:

Having no body cavity at all.

Answer 4

Acoelomate

(flatworms)

Question 5

Body cavity arrangements:

Having a body cavity lined in part by tissue derived from mesoderm, but also by tissue derived from endoderm

Answer 5

Pseudocoelomate

Question 6

Body cavity arrangements:

Have a true coelem (cavity), completley lined by tissue derived from the mesoderm.

Answer 6

COELOMATE

Question 7

Circulatory system lacking veins to draw blood back into the heart.

Answer 7

OPEN CIRCULATORY SYSTEM

Question 8

Sponges belong in this phylum

Answer 8

Phylum Porifera (pore bearers)

Question 9

1

Answer 9

Osculum

Question 10

3

Answer 10

Pores

Question 11

8 (just one)

Answer 11

Spicules

Question 12

5

Answer 12

Collar cells (choanocyte)

Question 13

Corals, jellies, hydras, and anemones belong in this phylum.

Answer 13

Phylum Cnidaria

Question 14

Which body form is this?

Answer 14

Medusa

Question 15

Which body form is this?

Answer 15

Polyp

Question 16

3

Answer 16

Tentacle

Question 17

1

Answer 17

Mouth

Question 18

10

Answer 18

Bud. A bud forms, detaches from the organism, and becomes a new individual.

Question 19

Name this structure, shown in its charged and uncharged form

Answer 19

Cnidocyte (stinging cell), located on a nematocyst.

Question 20

4

Answer 20

Nematocyst

Question 21

7

Answer 21

Gastrovascular cavity

Question 22

9

Answer 22

Epidermis

Question 23

8

Answer 23

Gastrodermis

Question 24

Concentration of sensory structures at anterior end

Answer 24

Cephalization

Question 25

Flatworms (including planarians) belong in this phylum

Answer 25

Phylum Platyhelminthes

Question 26

A

Answer 26

Pharynx

Question 27

C

Answer 27

Eyespots

Question 28

D

Answer 28

Ganglia

Question 29

B

Answer 29

Gastrovascular Cavity

Question 30

Name this entire structure

Answer 30

Tapeworm Scolex

Question 31

1

Answer 31

Hooks

Question 32

3

Answer 32

Tapeworm Suckers

Question 33

These tapeworm segments are known as?

Answer 33

Proglottids

Question 34

F

Answer 34

Tapeworm ovaries

Question 35

4

Answer 35

4Tapeworm testes

Question 36

1

Answer 36

Tapeworm Uterus