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Marine Science > Shark Test > Flashcards

Shark Test Flashcards

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Biology 101 flashcards
1
Q

Some vertebrates are made of cartilage or

A

Bone

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2
Q

What are the largest group of vertebrates?

A

Fish

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3
Q

What are the types of marine fish?

A

Agnatha (jawless fish)
Chondrichthyes (cartilaginous fish)
Osteichthyes (bony fish)

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4
Q

Examples of Agnatha:

A

Hagfish

Lampreys

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5
Q

Muscular circular mouth
Long, cylindrical body
Lack fins & scales

A

Agnatha

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6
Q

Feed on dead and dying fish (scavengers)

Live in burrows in soft sediments

A

Hagfishes

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7
Q

Parasites

Return to freshwater to breed

A

Lamprey

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8
Q

Examples of Chondrichthyes (cartilaginous fish)

A

Sharks
Skates
Rays
Ratfish

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9
Q

Examples of Osteichthyes (bony fish):

A

Lobe-finned fishes

Ray-finned fishes

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10
Q

What fish are considered more advanced?

A

Chondrichthyes and Osteichthyes

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11
Q

Characteristics of more advanced fish:

A 
Highly efficient gills
Scales
Paired fins
Many types of jaws
Lateral line and other sensory organs
Streamlined body
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12
Q

1000 species
5-7 gill slits
Spiraled
Claspers in males

A

Chondrichthyes

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13
Q

Openings on the head used to bring water directly in for respiration

A

Spiracles

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14
Q

Projections of the anal fin in makes used in copulation

A

Claspers

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15
Q

Why are the number of sharks decreasing?

A

Meat
Oil
Skin
Fins

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16
Q

Sensory organ used to detect electrical currents when sharks are close to an object

A

Organ of Lorenzini

17
Q

Thin tissue that covers eye for protection

A

Nicticating membrane

18
Q

Live birth

A

Vivipary

19
Q

Lay egg cases

A

Ovipary

20
Q

Internalized egg that hatches inside female before the young are expelled from the female

A

Ovovivipary

21
Q

How many species of sharks?

A

350

22
Q

Most sharks are? But some are

A

Carnivorous; planktonic

23
Q

Prefer shallow, warm water
Will travel into fresh water
Short, blunt snout
7-11 ft

A

Bull shark

24
Q

Stay in shallow water

A

Sand tiger shark

25
Q 
Prefer warm waters
Aggressive
13-20 ft 
Use head to attack stingrays
Good vision
Ampullae of Lorenzini
A

Hammerhead shark

26
Q

Largest fish in the sea (up to 40 ft)
Threatened
Filter feeder

A

Whale shark

27
Q

Always have live birth
Pectoral fins expand into wings
Gill slits 5 pairs

A

Rays

28
Q

Fleshy tail & no spine
Lay egg cases
Rat fishes

A

Skates

29
Q

Are vertebrates

A

Marine fish

Marine Science (12 decks)

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