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Animal Diversity > Acanthocephala, rotifera, bryozoa, nemertea > Flashcards

Acanthocephala, rotifera, bryozoa, nemertea Flashcards

1
Q

Phylum rotifera have ciliated crowns called…

What do these ciliated crowns do?

A

Coronas

Gather food + help move

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2
Q

Phylum rotifera have a mastsx… what is it?

A

Pumping pharynx

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3
Q

The body form of phylum rotifera is indicative of what?

Ex. Floating plankton are globular, swimmers and creepers are wormlike, sessile are vase-like…

A

Lifestyle

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4
Q

What phylum do the wheel bearers that are less than 1mm in size, have a corona (ciliated crown) and mastax (pumping pharynx)?

A

Rotifera

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5
Q

What phylum do the spine heads and the wholly parasitic group belong to

A

Acanthocephala

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6
Q

What is the wholly parasitic group of phylum acanthocephla?

A

Parasicitc to birds + fish

Hatch in intermediate host
Develop when eaten by final host

Parasites in invertebrates intestines

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7
Q

What phylu, has the synapomorphy of a retractable introverted spiny proboscis?

A

Acanthocephala

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8
Q

What kind of tentacles to lophophorates have?

A

Crown of cilia-covered tentacles

Fluid filled (coelomic cavity) + lined with cilia

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9
Q

What is the advantage to lophophorates having cilia lining their tentacles? What about having them be made of coelom?

A

Current of water created, helps bring food in

Thin-walled because of coelom- good for respiration

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10
Q

Phylum bryzoa / ectoporcta - where is anus?

A

Outside of lophophore tentacles

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11
Q

What phylum can clog pipes, foul hulls of ships, encrust seaweed and weaken it and hurt kelp forests?

A

Bryozoa

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12
Q

Ribbon or proboscis worms belong to what phylum?

A

Nemertea

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13
Q

Phylum nemertea - what is the use of having the proboscis?

A

Prey capture - Can shoot at whatever it aims at

Its in the rhynchocoel cavity (mesodermal cavity)

It snatches prey and bring it right into the cavity

Can inject neurotoxins - why its sticky

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14
Q

Where is the proboscis found in phylum nemertea worms?

A

Rhynchocoel cavity

Medodermal cavity = coelom

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15
Q

What is the 5 key body transitions of rotifera + Acanthocephala

A 
Organ
Bilateral
Pseudocoelomate
Tripobloblast/protostomes/lophotrochozoans 
No
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16
Q

What is the 5 key body transitions of bryozoa (ectoprocta)

A 
Organ
Bilateral
Eucoelomate
Triploblast/protostome/lophotrochozoans 
No
17
Q

What is the 5 key body transitions of nemertea

A 
Organ
Bilateral
Eucoelomate (rhynchocoel)
Triploblast protostomes lophotrochozoans 
No

Animal Diversity (9 decks)

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