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Biology 30 > Chapter 34 > Flashcards

Chapter 34 Flashcards

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1
Q

What is the one phylum discussed in this chapter?

A

Chordata

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2
Q

What are the three subphyla within the phylum Chordata?

A

Cephalochordata
Urochordata
Vertebrata

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3
Q

What are the 6 classes from the phylum vertebrata discussed in this chapter?

A 
Cephalaspidomorphi
Myxini
Chondrichthyes 
Osteichthyes
Amphibia
Reptilia
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4
Q

What are the subphyla cephalochordata?

A

Commonly called lancelets
Small eel like creature
Marine

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5
Q

What are the subphyla Urochordata?

A

Called tunicates
Sea squirts
Marine

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6
Q

What are the subphyla vertebrata?

A

Have vertebrae column

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7
Q

What is the class Cephaspidomorphi?

A

Jawless fishes
Lampreys
Snakelike body, no scales
Cartilage skeleton

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8
Q

What is the class Myxini?

A

Jawless fishes too
Slime is used as a defence mechanism
Use rasps instead of jaws to eat
Commonly called slime eels

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9
Q

What is the class Chondrichthyes?

A

Cartilaginous fishes
Sharks rays and skates
Cartilage skeleton

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10
Q

What is the class Osteichthyes?

A

Bony fishes
Largest class
Moray eel to seahorse

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11
Q

What is the class amphibia?

A

Frogs, toads, salamanders, newts
First land vertebrates
Fully aquatic embryos

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12
Q

What is the class reptilia?

A

Crocodiles, alligators, turtles, tortoises, lizards and snakes
Do not require water for reproduction
Scaly dry skin

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13
Q

What is the amniotic egg?

A

Allows vertebrates to further explore terrestrial habitats

Because it allowed reproduction to be done outside water

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14
Q

What are the common Chordata characteristics?

A

Have dorsal, hollow nerve chord
Have flexible rod like internal support structure called notochord
Have paired gill slits

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15
Q

What is “cold blooded” and what are the animals that use this?

A

Cold blooded means ectothermic which means their body temperature changes with the temperature of their environment
Fishes, amphibians, and reptiles usebthis

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16
Q

What is “warm blooded” and what are the animals that use this?

A

Warm blooded means endothermic which means their body temperature remains fairly constant regardless of the temperature of their environment
Birds and mammals use this

17
Q

What are the lateral lines used in sharks?

A

Lines that extend across the sharks body to sense vibration

18
Q

What is the operculum found in bony fishes?

A

A protective bony flap that protects the gills

19
Q

What is the swim bladder found in most bony fishes?

A

A gas filled sac in the upper part of their body cavities that regulates buoyancy of the fish

20
Q

What is the nictitating membrane?

A

A transparent eyelid that allows the frog to see underwater

21
Q

What is the tympanic membrane?

A

A round eardrum behind each eye that picks up sound waves from air or water

Biology 30 (11 decks)

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