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Flashcards in Shark Test Deck (64):
0

The notochord is later replaced by?

The true backbone

1

Ectothermic

Cold- blooded

2

What are the 3 classes of phylum chordate?

Agnatha, Chondrichthyes, Odteicthyes

3

Characteristics of Agnatha are

Jawless fish, most primitive, mouth is a circular sucking disc, they are primarily parasitic

4

Characteristics of Chindricthyes

Jawed gosh with cartilaginous skeletons, no swim bladder,

5

Characteristics of Osteichthyme?

Bony fish, true bones, spiny rated species,

6

The most efficient design for moving rapidly through the water?

Fusiform

7

The body shape of a stingray

Dorsoventrally flattened

8

Which side of a flinders body normally faces the bottom

The right side

9

The eel has an elongated body shape called

Attenuated shape

10

Myomeres

Body muscle segments

11

What type of muscle fibers function during short bursts of speed

White fibers

12

Why can't trigger fish swim as fast and tuna and mackerel?

They have little to know amounts of red fibers

13

What find are used for turning, balancing, and breaking

Paired pectoral and pelvic fins

14

In active predation the prey is usual what length of the predator

1/4

15

Predator feeders that take small bites of food

Nibblers

16

Special devices on gills that allow fish to swallow food as water passes through the mouth are

Gill rakers

17

What are barbels

Sense organs that detect food on the murky bottom

18

Lamprey uses what to scrape a hole in the side of a fish

Rasping tongue

19

What do Gill rakers prevent from happening

They prevent particlr in the water from damaging the gill filaments

20

Fish receive oxygen through what organ

Spiracle

21

What is the operculum

Covers and protects the gills

22

What is a spiracle

A modified gill slit in sharks and rays it work with the mouth. To bring water into the gill chamber

23

What does the swim bladder do?

Maintains neutral buoyancy

24

Open swim bladder

Found in older fish, can be filled by gulping air from the surface

25

Closed swim bladder

Regulated by the gas gland controlled by the nervous system

26

The process where organism dispose of wastes is

Excretion

27

The main organs of excretion are

Kidneys and gills

28

What do chloride cells do

Actively remove excess salts

29

What is Osmoregulation

Fish regulate the amount of water in their tissues and cells

30

Vision is important for

Finding food, breeding partner, and avoiding predators

31

A sac-like inner ear in the fish that functions in hearing and balance is the

Labyrinth

32

Neuromast sense cells are

Fluid filled canals and receptors in the inner ear

33

The lateral line is important to fish because it

Helps fish swim as a shoal, and detects low frequency vibrations

34

The process where fish can detect minute quantities of materials dissolved in water is

Chemireception

35

The ability of fish to detect electrical currents is

The Ampullae of Lorenzeni

36

The ampullae of lorenzini is

A system of pores on the snout that detect electrical currents

37

The protective material covering the outer layer of skin is

Mucus

38

Body odor is found where

Mucus

39

Fish coloration is used for

Species recognition, camouflage, warning to others, and advertising willingness to remove parasites

40

Star shaped pigment cells located under the transparent scales or the thin cell layer are

Chromatophores

41

Iridocytes are

Pigment cells that contain reflecting granules that work like mirrors

42

Countershading is important because it

Makes it hard for predators or prey to see or be seen

43

Migratory fish that breed in freshwater and spend their lives at sea are

Anadromous

44

Fish that breed at sea and spend their lives in freshwater are

Catadromous

45

Milt is produced in the

Testes

46

Roe is

Eggs

47

Time of breeding is determined by

Water temp, photoperiod, salinity levels, and tide cycles

48

Large schools are spawning fish are called

Shoals

49

Where does gas exchange occur

In the gills

50

The most primitive fish class is

Agnatha

51

Agnatha contains

Lamprey and hagfish

52

Chondrichthyes contains

Sharks, rays, and chimeras

53

Osteichthyes contain

Tuna, dolphin fish, swordfish, and coral reefs fish

54

What does dorsoventrally flattened mean

Flattened from top to bottom

55

What fins are used for lift and support

Pectoral fins

56

Attenuated means

Elongated body shape

57

The lateral line serves what purpose

Aids in senses

58

Where is the Ampullae of Lorenzini located

On the snout

59

Which find are paired

Pectoral and pelvic fins

60

The shapes of caudal find are

Heteroceral, diphyceral, homocercal

61

What is oopagy

Embryonic cannabalism

62

Viviparous means

Common way of reproduction in sharks

63

Ovoviviparous means

Most advanced way of reproduction in sharks