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Magnet Biology > Phyla Porifera and Cnidaria > Flashcards

Phyla Porifera and Cnidaria Flashcards

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1
Q

What does type of animal does the Phylum Porifera contain?

A

sponges?

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2
Q

Are the animals in the Phylum Porifera asymmetrical or symmetrical?

A

Asymmetrical

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3
Q

Does the Phylum Porifera have segmentation?

A

no

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4
Q

Type of coelom/body cavity for porifera

A

Acoelomates

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5
Q

Describe the nervous system of porifera

A

No Cephalization

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6
Q

Describe the skeleton/movement of porifera

A

Sessile, Endoskeleton-Spicules

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7
Q

Describe the digestion of porifera

A

filter feeders / many pores

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8
Q

What are Choanocytes?

A

flagellated cells that pull food in thru ostia

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9
Q

What is the ostia?

A

pores

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10
Q

What do amoebocyte cells do?

A

circulate food around the organism

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11
Q

Describe the excretion of porifera

A

diffusion; wastes exit thru osculum

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12
Q

Describe the circulation of porifera

A

None

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13
Q

Describe the respiration of porifera

A

diffusion-obtain oxygen from water

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14
Q

Describe the reproduction

A

sexual-Hermaphrodites

asexual- bud; Regenerate body parts

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15
Q

How many germ layers do cnidarias have?

A

2

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16
Q

Describe the body symmetry/shape of cnidarias

A

radial

17
Q

2 body forms of cnidarias

A

polyp & medusa

18
Q

Describe the segmentation of cnidarias

A

none

19
Q

Describe the nervous system of cnidarias

A

no cephalization

20
Q

Describe the skeletal system of cnidarias

A

nematocyst: stinging cells found on tentacles

21
Q

Describe the movement of cnidarians

A

Hydrostatic; sessile or move

22
Q

Describe the digestive system of cnidarias

A

one body opening for food & wastes

23
Q

Describe the extretion system of cnidarias

A

one body opening for food & wastes

24
Q

Describe the circulatory system of cnidarias

A

none

25
Q

Describe the respiratory system of cnidarias

A

oxygen diffuses into body from water

26
Q

Describe the reproductive system of cnidarias

A

asexual-budding-Polyp form- ex. Hydra

sexual-Medusa form- ex. Jellyfish
regenerates body parts

27
Q

Describe Hydrozoans

A

colonies which appear to be one organism

Ex: Portuguese-man-of-war

28
Q

Describe Scyphozoans

A

independent medusa forms

Ex: jellyfish, box jelly

29
Q

Describe Anthozoans

A

colonies of polyps

Ex: corals, sea anemone

30
Q

Difference between medusa and polyp?

A

The tentacles of a medusa go down whereas the tentacles of a poly go up

Magnet Biology (29 decks)

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