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Bio > Shark Bio > Flashcards

Shark Bio Flashcards

0
Q

Ex. Groundsharks (1)

A

Carcharhiniformes

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1
Q

What two parts help extract oxygen

A

Gills and the spiracle

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2
Q

Ex. Frilled sharks (3)

A

Hexanchiformes

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3
Q

Ex. Bullhead sharks (2)

A

Heterodontiformes

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4
Q

Ex. Mackerel sharks (4)

A

Lamniformes

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5
Q

Ex. Carpet sharks (5)

A

Orectolobiformes

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6
Q

Ex. Saw sharks (6)

A

Pristiophoriformes

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7
Q

Ex. Dogfish (7)

A

Squaliformes

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8
Q

Ex. Angel sharks (8)

A

Squatiniformes

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9
Q

Sharks first appeared how many years ago?

A

400 million years

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10
Q

Fossil sharks were divided into which two groups

A

Xenacanths and hybodonts

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11
Q

What fossils showed evidence that they had been eaten by sharks

A

Marine mammal bones

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12
Q

How many families of sharks are there?

A

30 families (375 species)

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13
Q

Intestinal valve is either..

A

Spiral or scroll

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14
Q

Sharks skin is made of soft but prickly hairs called

A

Dermal denticles

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15
Q

Red muscle

A
  • makes up 11% total muscle
  • good blood supply
  • used long term/slow swimming
16
Q

White muscle

A
  • used in fast/sprint swimming
  • poor blood supply
  • 89% total muscle
17
Q

What percentage of sharks differ from original diagram?

A

40%

18
Q

2 plankton feeder sharks?

A

Whale and basking

19
Q

How many gill slits?

A

Usually 5, but can have up to 6 or 7

20
Q

Teeth lie in the ____.

A

Tooth bed

21
Q

Male reproductive organ is called

A

A clasper

22
Q

Egg laying

A

Oviparous

23
Q

Develop from eggs inside womb but come out live birth

A

Ovoviviparous

24
Q

Viviparous

A

Live birth

25
Q

Grooves and canals along back make up the

A

Lateral line

26
Q

Electro sensory organs are called

A

Ampullae of lorenzini

Bio (3 decks)

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