Profera and Cnidaria

Question 1

Which type of animal is classified as Porifera?

Answer 1

Sponges

Question 2

Radial symmetry

Answer 2

Body parts arranged around central axis

Question 3

Bilateral symmetry

Answer 3

Body divided into Left and right planes

Question 4

What is the name for the bilateral plane and how does it help the animal’s function?

Answer 4

Sagittal plane, helps with directional movement

Question 5

What are animals called with bilateral symmetry?

Answer 5

Bilaterians

Question 6

What class is sponges in?

Answer 6

Parazoa

Question 7

What class do animals fall into besides sponges?

Answer 7

Eumetazoa

Question 8

How many germ layers does Eumetazoa have?

Answer 8

2 or 3

Question 9

Name for two germ layers and name the layers

Answer 9

Diploblastic - ectoderm and endoderm

Question 10

Animal with three germ layers. What are they?

Answer 10

Triploblastic
Ectoderm
Mesoderm
Endoderm

Question 11

Describe the germ layers and basic interior structure of Cnidaria

Answer 11

Diploblastic with tissues but no organs

Question 12

Define Acoelomate

Answer 12

3 germ layers with no body cavity

Question 13

Flatworms, flukes and tape worms are what?

Answer 13

Acoelomates : planarians

Question 14

Define Coelomates

Answer 14

Body cavity is called a coelom that is surrounded by the mesoderm

Question 15

Pseudocoelomates

Answer 15

A pseudocoelom that forms between the mesoderm and the endoderm during development

Question 16

Protostomes

Answer 16

3 germ layers, bilateral symmetry
Mouth forms first

Question 17

Deuterostomes

Answer 17

Only Echinoderms and Chordates
Anus forms first, embryonic cells divide by radial cleavage

Question 18

Cephalization

Answer 18

Presence of a head

Question 19

Parazoa

Answer 19

Animals with no tissues or germ layers

Question 20

Eumetazoa

Answer 20

Animals with tissues and 2 or 3 germ layers

Question 21

Diploblastic

Answer 21

2 germ layers

Question 22

Triploblastic

Answer 22

3 germ layers

Question 23

Acoelomate

Answer 23

3 germ layers, no body cavity

Question 24

Pseudocoelomate

Answer 24

Body forms between the mesoderm and endoderm

Question 25

Coelomate

Answer 25

Body cavity surrounded by the mesoderm

Question 26

Name the body cavity in a Coelomate

Answer 26

The Coelom

Question 27

Protostome

Answer 27

3 germ layers, bilateral symmetry and mouth forms from the Blastopore

Question 28

Deuterostome

Answer 28

Only includes: Echinoderms and Chordates. Blastopore becomes anus, All Deuterostomes are Coelomate.

Question 29

Epithelium

Answer 29

Outside layer of a sponge

Question 30

Mesohyl

Answer 30

Gelatinous middle layer consisting of live and dead cells

Question 31

Choanocytes

Answer 31

Inner chamber : collar cells

Question 32

Spongin

Answer 32

Protein fibers that make up a flexible endoskeleton