Profera and Cnidaria Flashcards

1
Q

Which type of animal is classified as Porifera?

A

Sponges

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2
Q

Radial symmetry

A

Body parts arranged around central axis

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3
Q

Bilateral symmetry

A

Body divided into Left and right planes

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4
Q

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

A

Sagittal plane, helps with directional movement

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5
Q

What are animals called with bilateral symmetry?

A

Bilaterians

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6
Q

What class is sponges in?

A

Parazoa

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7
Q

What class do animals fall into besides sponges?

A

Eumetazoa

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8
Q

How many germ layers does Eumetazoa have?

A

2 or 3

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9
Q

Name for two germ layers and name the layers

A

Diploblastic - ectoderm and endoderm

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10
Q

Animal with three germ layers. What are they?

A

Triploblastic
Ectoderm
Mesoderm
Endoderm

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11
Q

Describe the germ layers and basic interior structure of Cnidaria

A

Diploblastic with tissues but no organs

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12
Q

Define Acoelomate

A

3 germ layers with no body cavity

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13
Q

Flatworms, flukes and tape worms are what?

A

Acoelomates : planarians

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14
Q

Define Coelomates

A

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

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15
Q

Pseudocoelomates

A

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

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16
Q

Protostomes

A

3 germ layers, bilateral symmetry
Mouth forms first

17
Q

Deuterostomes

A

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

18
Q

Cephalization

A

Presence of a head

19
Q

Parazoa

A

Animals with no tissues or germ layers

20
Q

Eumetazoa

A

Animals with tissues and 2 or 3 germ layers

21
Q

Diploblastic

A

2 germ layers

22
Q

Triploblastic

A

3 germ layers

23
Q

Acoelomate

A

3 germ layers, no body cavity

24
Q

Pseudocoelomate

A

Body forms between the mesoderm and endoderm

25
Q

Coelomate

A

Body cavity surrounded by the mesoderm

26
Q

Name the body cavity in a Coelomate

A

The Coelom

27
Q

Protostome

A

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

28
Q

Deuterostome

A

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

29
Q

Epithelium

A

Outside layer of a sponge

30
Q

Mesohyl

A

Gelatinous middle layer consisting of live and dead cells

31
Q

Choanocytes

A

Inner chamber : collar cells

32
Q

Spongin

A

Protein fibers that make up a flexible endoskeleton