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Bio 108 > Lecture 16 Parazoa > Flashcards

Lecture 16 Parazoa Flashcards

1
Q

What dose the root word Para mean?

A

Beside

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2
Q

What dose the root word zoo/zoa mean?

A

Animal

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3
Q

What is unique about Parazoa?

A

They lack true tissues

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4
Q

What phylum do parazoa belong to?

A

Phylum Porifera

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5
Q

What is the other member that Parazo belong to?

A

Placozoa

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6
Q

What dose the root word -plac- mean?

A

Flat

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7
Q

until recntly the Phylum Placozoa only had one spp. what was it?

A

Trichoplax ashaerens

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8
Q

How did the trichoplax ashaeren move around and eat?

A

It moved around through the use of cilia

and externally digested its food

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9
Q

What dose the root word Por mean?

A

Pore

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10
Q

what dose the root word -fer- mean?

A

To bear

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11
Q

What is the most well known member of the phylum Proifera?

A

Sponges

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12
Q

What is the mode of transport for Phylum Proifera?

A

They are sissile

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13
Q

What is the morphology of Proifera?

A

Their structure comes from spicules that are calcarious or silicious

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14
Q

what is Spongin?

A

A tough collagen-protien network for support in Proifera

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15
Q

What are the two main types of cell within Proifera?

A

They can be amoebocytes
or
Choanocytes

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16
Q

What is the defining feature of Choanocytes?

A

They have one or more large openings called osculum

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17
Q

What dose the root word -osculum- mean?

A

little mouth

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18
Q

What is mesohyl?

A

A gelatinous acellular layer between the outer skin and the choanocyte layer in Proifera

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19
Q

Can a acelluar substance be a tissue?

A

No

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20
Q

How do the vast majority of Proifera feed?

A

Through suspension feeding

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21
Q

What happens to the food particles once they enter the Porifera?

A

It becomes phagocytosed

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22
Q

do Porifera have sexes?

A

They have seperate sexes. although some are Hermaphroditic.

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23
Q

What is a simultaneous hermaphrodite?

A

An animal that is both sexes as once

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24
Q

What is a sequential hermaphrodite?

A

An animal that starts out as once sex than changes to another

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25
Q

Within Porifera what happens to the zyote?

A

It is retained until it develops into a ciliated larva

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26
Q

what happens once the Porifera has ciliated cells?

A

It reabsorbs them and grows a flagella

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27
Q

Where do most of the mutualist Porifera live?

A

In the photic zone

28
Q

What are glass sponges?

A

Long living sponges that form reefs

29
Q

What are the two phylum of Radiata?

A

Cnidaria and Ctenophora

30
Q

What is unique about both Cnidaria and Ctenophora?

A

They have true differentiated tissues

31
Q

What is the embrotic layers of Radiata?

A

It is diploblastic

32
Q

Do radiata have organs?

A

Yes

33
Q

What kind of symmetry do Radiata have?

A

Radial symmetry

34
Q

What are the most well known Cnidaria?

A

Jellyfish

35
Q

What lines the body cavity of Cnidaria?

A

Gastrodermis

36
Q

What lines the outside of the Cnidaria?

A

Epidermis

37
Q

What is the middle layer of the jelly fish?

A

Mesogloea

38
Q

Do Cnidaria have a anus?

A

no

39
Q

What is the layout of the polyp Cnidaria?

A

Oral end is outward and aboral end is attached to substrate

40
Q

What dose the root word -ab- mean?

A

away from

41
Q

What dose the medusa layout of Cnidaria look like?

A

has all oral ends facing downwards

42
Q

What are the two different types of Cnidaria?

A

Polyp and Medusa

43
Q

What is common amoung Cnidaria polyp and Medusa?

A

They both have tentacles for prey capture

44
Q

What are Cnidaria name after?

A

Cnidocytes

45
Q

What dose the root word -cnida- mean?

A

nettle

46
Q

What is the common nematocyte?

A

Cnida

47
Q

What hold the majority of species of Cnidaria?

A

Class Hydrozoa

48
Q

What is the most well known Hydrozoa?

A

freshwater Hydra

49
Q

What is interesting about the life cycle of Cnidaria?

A

They can alternate between sexual and asexual forms

50
Q

What form do members of the Class Scyphoza spend most of their life as?

A

Medusa

51
Q

What dose the key word -scyph- mean?

A

cup

52
Q

How do Scyphoza swim?

A

By contracting a network of fibers

53
Q

What is cool about the Class Cubozoa (part of Cnidaria)

A

They have eyes and have extermly toxic nematocysts

54
Q

What is interesting about the class Anthozoa?

A

They have no medusa stage and only live as a polyp

55
Q

What is the most well knwon Anthozoa?

A

sea anemones and corals

56
Q

True or false:

All Cnidaria are predatory?

A

true

57
Q

What is the name of the algae that live witin Cnidaria?

A

Zooxanthellae

58
Q

What are the most well known Ctenophora?

A

comb jellyfish

they are all marine

59
Q

How to Ctenophora move around?

A

They move by flapping a bunch of cilia arranged in bands

60
Q

What dose the root word -cten- mean?

A

comb

61
Q

Do Ctenophora have hox genes?

A

nope

62
Q

What is interesting about Ctenophora?

A

They are the largest animals to move with only cilia

They have only two layers of tissue and a layer of mesogloea

63
Q

Do Ctenophora have a mouth and a anus?

A

no, only a mouth

64
Q

How do Ctenophora feed?

A

They feed through using tentacle covered in colloblasts

65
Q

What dose the root word -collo- mean?

A

glue

Bio 108 (24 decks)

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