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Animal Biology > Exam 3 > Flashcards

Exam 3 Flashcards

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1
Q

What phylum is characterised as flatworms, bilateral acoelomates flattened dorsoventrally and triploblastic

A

Platyhelminthes

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2
Q

Do Platyhelminthes have synapomorphic characters?

A

No

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3
Q

Platyhelminthes have a loose tissue that fills the spaces between other more specialised cells called

A

Parenchyma

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4
Q

Parenchyma provides

A

Skeletal support
Nutrient storage
Motility
Transport

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5
Q

What are the four classes of Platyhelminthes

A

Turbellaria
Monogenea
Trematoda
Cestoda

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6
Q 
What class is this 
planarians
Mostly free living and aquatic;  carnivorous aquatic forms; external surface usually ciliated; predaceous; possess rhabdites, protrusible proboscis, frontal glands and many mucous glands; mostly hermaphroditic
A

Turbellaria

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7
Q 
What class is this
Mostly ectoparasites on vertebrates(usually fishes, occasionally turtles, frogs, copepods, squids); one lifecycle form in only one host; bear opisthaptor; monogenetic flukes
A

Monogenea

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8
Q

What class is this
flukes including schistosomes
suckers for attatchment
All are parasitic; several holdfast devices present; have complicated life cycles involving both sexual and asexual reproduction; trematodes

A

Trematoda

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9
Q

What are the two subclasses of Trematoda

A

Aspidogastrea

Digenea

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10
Q

Describe the subclass aspidogastrea

A

Mostly endoparasites of molluscs; possess large opisthaptor; most lack an oral sucker

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11
Q

Describe the subclass digenea

A

Adults endoparasites in vertebrates, at least two different life cycle forms in two or more hosts; have oral sucker and acetabulum

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12
Q

What class is this
tapeworms
All parasitic with no digestive tract; have great reproductive potential; tapeworms

A

Cestoda

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13
Q

What are the two subclasses of cestoidea

A

Cestodaria

Eucestoda

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14
Q

Describe the subclass cestodaria

A

Body not subdivided into proglottids; larva in crustaceans, adults in fishes

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15
Q

Describe the subclass eucestoda

A

True tapeworms; body divided into scolex, neck, and strobila; strobila composed of many proglottids; both male and female reproductive systems in each proglottid, adults in digestive tract of vertebrates

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16
Q

What are ctenophora

A

comb jellies

17
Q

what are cnidaria

A

jellyfishes, anemones, corals, etc

18
Q

these unique groups are marine and have complex life cycles including polyp and medusa stages, have true tissues and are mostly diploblastic (some may be triploblastic)
this group is primarily radially symmetrical and many are predatory actively hunting in the water column while others are sessile sitting and plucking prey out of the water column or filter feeding

A

cnidaria, ctenophora

19
Q

Cnidaria and ctenophora have been around since the ____ period

A

edicarian

20
Q

What class is in phylum ctenophora

A

Tentaculata

21
Q

what are characteristics of tentaculata?

A

Comb jellies; Marine coastal waters; utilize cilia for transportation; most species hermaphroditic, lack stinging cells

22
Q

What classes make up cnidaria

A

hydrozoa, scyphozoa, cubozoa, anthozoa

23
Q

what are characteristics of hydrozoa

A

Portuguese man-o-war; mainly marine, both polyp and medusa stage; polyp colonies in most

24
Q

what are characteristics of scyphozoa

A

jellyfish; marine coastal waters; polyp stage restricted to small larval forms

25
Q

what are characteristics of cubozoa

A

box jellyfish; marine coastal waters; polyp and medusa stage; square shaped when viewed from above

26
Q

what are characteristics of anthozoa

A

sea anemones, corals, and sea fans; marine coastal waters; solitary or colonial polyps; no medusa stage; partitioned gastrovascular cavity

27
Q

what classes make up mollusca

A

polyplacophora, gastropoda, bivalvia, cephalopoda

28
Q

what are characteristics of polyplacophora

A

Chitons; marine; shell of eight dorsal plates; broad foot

29
Q

what are characteristics of gastropoda

A

snails and slugs; marine, freshwater and terrestrial; coiled shell; prominent head with tentacles and eyes

30
Q

what are characteristics of bivalvia

A

clams, oysters, and mussels; marine, freshwater; body compressed between two hinged shells in a left and right arrangement; hatchet shaped foot

31
Q

what are characteristics of cephalopoda

A

squids and octopi; marine; excellent swimmers, predatory; foot separated into arms and tentacles that may contain suckers; well developed eyes

Animal Biology (4 decks)

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