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Bio Of Fishes Mid 1 > lecture 6 > Flashcards

lecture 6 Flashcards

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Biology 101 flashcards
1
Q

elasmobranchii

A

-cartilagenous skeleton, no ribs
-placoid scales
ex: tiger shark, basking shark
-5-7 gill slits
-ovoviparous mostly

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1
Q

Holocephali

A

-ex: ratfish, elephant fish
-cartilagenous skeleton
-upper jaw fused to skull (autostylic)
-large grinding tooth plates
-electrorecpetors
-internal fertilization, oviparous

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2
Q

3 elasmobranchii respirations

A
  1. buccal pumping: pushes water over gills
  2. spiracle: draws water in over gills
  3. ram ventilation: constant swimming
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Bio Of Fishes Mid 1 (10 decks)

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