Lecture 16 Parazoa

Question 1

What dose the root word Para mean?

Answer 1

Beside

Question 2

What dose the root word zoo/zoa mean?

Answer 2

Animal

Question 3

What is unique about Parazoa?

Answer 3

They lack true tissues

Question 4

What phylum do parazoa belong to?

Answer 4

Phylum Porifera

Question 5

What is the other member that Parazo belong to?

Answer 5

Placozoa

Question 6

What dose the root word -plac- mean?

Answer 6

Flat

Question 7

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

Answer 7

Trichoplax ashaerens

Question 8

How did the trichoplax ashaeren move around and eat?

Answer 8

It moved around through the use of cilia

and externally digested its food

Question 9

What dose the root word Por mean?

Answer 9

Pore

Question 10

what dose the root word -fer- mean?

Answer 10

To bear

Question 11

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

Answer 11

Sponges

Question 12

What is the mode of transport for Phylum Proifera?

Answer 12

They are sissile

Question 13

What is the morphology of Proifera?

Answer 13

Their structure comes from spicules that are calcarious or silicious

Question 14

what is Spongin?

Answer 14

A tough collagen-protien network for support in Proifera

Question 15

What are the two main types of cell within Proifera?

Answer 15

They can be amoebocytes
or
Choanocytes

Question 16

What is the defining feature of Choanocytes?

Answer 16

They have one or more large openings called osculum

Question 17

What dose the root word -osculum- mean?

Answer 17

little mouth

Question 18

What is mesohyl?

Answer 18

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

Question 19

Can a acelluar substance be a tissue?

Answer 19

No

Question 20

How do the vast majority of Proifera feed?

Answer 20

Through suspension feeding

Question 21

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

Answer 21

It becomes phagocytosed

Question 22

do Porifera have sexes?

Answer 22

They have seperate sexes. although some are Hermaphroditic.

Question 23

What is a simultaneous hermaphrodite?

Answer 23

An animal that is both sexes as once

Question 24

What is a sequential hermaphrodite?

Answer 24

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

Question 25

Within Porifera what happens to the zyote?

Answer 25

It is retained until it develops into a ciliated larva

Question 26

what happens once the Porifera has ciliated cells?

Answer 26

It reabsorbs them and grows a flagella

Question 27

Where do most of the mutualist Porifera live?

Answer 27

In the photic zone

Question 28

What are glass sponges?

Answer 28

Long living sponges that form reefs

Question 29

What are the two phylum of Radiata?

Answer 29

Cnidaria and Ctenophora

Question 30

What is unique about both Cnidaria and Ctenophora?

Answer 30

They have true differentiated tissues

Question 31

What is the embrotic layers of Radiata?

Answer 31

It is diploblastic

Question 32

Do radiata have organs?

Answer 32

Yes

Question 33

What kind of symmetry do Radiata have?

Answer 33

Radial symmetry

Question 34

What are the most well known Cnidaria?

Answer 34

Jellyfish

Question 35

What lines the body cavity of Cnidaria?

Answer 35

Gastrodermis

Question 36

What lines the outside of the Cnidaria?

Answer 36

Epidermis

Question 37

What is the middle layer of the jelly fish?

Answer 37

Mesogloea

Question 38

Do Cnidaria have a anus?

Answer 38

no

Question 39

What is the layout of the polyp Cnidaria?

Answer 39

Oral end is outward and aboral end is attached to substrate

Question 40

What dose the root word -ab- mean?

Answer 40

away from

Question 41

What dose the medusa layout of Cnidaria look like?

Answer 41

has all oral ends facing downwards

Question 42

What are the two different types of Cnidaria?

Answer 42

Polyp and Medusa

Question 43

What is common amoung Cnidaria polyp and Medusa?

Answer 43

They both have tentacles for prey capture

Question 44

What are Cnidaria name after?

Answer 44

Cnidocytes

Question 45

What dose the root word -cnida- mean?

Answer 45

nettle

Question 46

What is the common nematocyte?

Answer 46

Cnida

Question 47

What hold the majority of species of Cnidaria?

Answer 47

Class Hydrozoa

Question 48

What is the most well known Hydrozoa?

Answer 48

freshwater Hydra

Question 49

What is interesting about the life cycle of Cnidaria?

Answer 49

They can alternate between sexual and asexual forms

Question 50

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

Answer 50

Medusa

Question 51

What dose the key word -scyph- mean?

Answer 51

cup

Question 52

How do Scyphoza swim?

Answer 52

By contracting a network of fibers

Question 53

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

Answer 53

They have eyes and have extermly toxic nematocysts

Question 54

What is interesting about the class Anthozoa?

Answer 54

They have no medusa stage and only live as a polyp

Question 55

What is the most well knwon Anthozoa?

Answer 55

sea anemones and corals

Question 56

True or false: | All Cnidaria are predatory?

Answer 56

true

Question 57

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

Answer 57

Zooxanthellae

Question 58

What are the most well known Ctenophora?

Answer 58

comb jellyfish | they are all marine

Question 59

How to Ctenophora move around?

Answer 59

They move by flapping a bunch of cilia arranged in bands

Question 60

What dose the root word -cten- mean?

Answer 60

comb

Question 61

Do Ctenophora have hox genes?

Answer 61

nope

Question 62

What is interesting about Ctenophora?

Answer 62

They are the largest animals to move with only cilia They have only two layers of tissue and a layer of mesogloea

Question 63

Do Ctenophora have a mouth and a anus?

Answer 63

no, only a mouth

Question 64

How do Ctenophora feed?

Answer 64

They feed through using tentacle covered in colloblasts

Question 65

What dose the root word -collo- mean?

Answer 65

glue