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Biology final > 34 > Flashcards

34 Flashcards

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1
Q

Echinodermata

A

Starfish

Seastars

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2
Q

What makes a chordate?

A

Notochord
Dorsal nerve cord
Snail tail
Pharyngeal slits

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3
Q

Cephalochordates

A

Lancelets, small
Retain chordate synapomorphies through out life
Filter feeders

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4
Q

Urochordates- Tunicates

A 
Sea squirts 
Adult sessile
Colonial
Filter feeds
(Lose form as adult )
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5
Q

Craniates

A

Chordates with head

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6
Q

Myxini

A

Hagfishes
Bottom scavengers
Cartilaginous skeleton from notochord but no vertebrate
Jawless

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7
Q

Myxini

A 
Hag fishes 
No jaws
Unique defender
Adults can change sex 
Slime defense
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8
Q

Vertebrates

A

Craniates with a backbone

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9
Q

Petromyzontida-lempreys

A

Oldest line of vertebrates
Jawless, parasitic
Cartilaginous vertebra surrounding notochord

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10
Q

Gnathostomes

A

Jaw mouths

Evolved from skeletal arches that supported pharyngeal slits

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11
Q

Chondrichthyans

A

Rays, skates, sharks, chimaeras

Finned fishes with cartilaginous skeletons

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12
Q

Chondrichthyans

A

Internal fertilization
Oviparous - egg hatch outside mothers body
Ovoviviparous- embryo develops in uterus; nourished by egg yolk
Viviparous- embryo develops in uterus; nourished in placenta from mothers blood

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13
Q

Skates and rays

A

Live on the ocean floor and feed on animals in the sediments
Chimeras live in deep sea cold waters

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14
Q

Osteichthyans

A

Most have bony Endoskeleton
Fishes
Ray-finned
Lobe-finned

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15
Q

Actinopterygii- ray finned fishes

A
  • recognizable fish

- fins supported by long flexible rays

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16
Q

Ray finned fishes

A

Feed on most foods
Filter plankton , corals, algae

Exhibit complex behaviors
Schools, build best, choose mates, care for young

17
Q

Lobe finned fishes (sarcopterygii)

A

Muscular fins
( walk under water)
Three lineages include coelacanths, lungfishes, tetrapods

18
Q

Harmful to fish

A

Chemical fishing
Dynamite/ Blast fishing
Ghost fishing
By catch

19
Q

ChordateS

A

Bilateral
All vertebrates
(Urochordates & cephalochordates)
Invertebrate

20
Q

Actinoptergii

A

Ray finned

Bony skeletons

21
Q

Actinista

A

Coelacanths

Ancient lineage of aquatic lobe fins still surviving in Indian Ocean

22
Q

Dipnoi

A

Lung fishes
Freshwater lobe-find with both lungs and gills
Sister group of tetrapods

Biology final (1 decks)

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