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Wildlife Biology > Invertebrates #3 > Flashcards

Invertebrates #3 Flashcards

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1
Q

What animals are in Phylum Echinodermata?

A

Sea Stars, Urchins

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2
Q

What body symmetry do echinoderms have?

A

Pentamerous radial symmetry

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3
Q

What does pentamerous mean?

A

5 body parts that radiate out from a central body axis

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4
Q

What is the water vascular system in Phylum Echinodermata?

A
  • a series of tubs that pumps water throughout their bodies
  • has multiple small branches with tiny suction cups at the end
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5
Q

What type of body has a radial symmetry?

A

they have an oral and aboral surface.

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6
Q

What are tube feet?

A

tiny branches with tiny suction cups at the end

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7
Q

How many arms do sea stars have?

A

5

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8
Q

How do sea stars feed?

A

with an eversible stomach

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9
Q

how are brittle stars different from true stars?

A

The have a central body disk with brittle arms

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10
Q

how are brittle stars different from true stars?

A

Their tube feet are highly reduced so they use their arms to move.

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11
Q

What do brittle stars eat?

A

they filter feed detritus

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12
Q

What is pedicellariae?

A

Keeps the skin of the star fish clean

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13
Q

Do brittle stars have a pedicellariae?

A

no

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14
Q

Describe the endoskeleton of an urchin

A
  • no arms
  • body covered by moveable spine
  • ossicles fused into a test
  • feeding structure called Aristotle’s Lantern
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15
Q

What is #1?

A

madreporite

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16
Q

What is #2?

A

pores for tube feet

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17
Q

What is #3?

A

test

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18
Q

What is #4?

A

mouth

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19
Q

What is 5?

A

ring canal

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20
Q

what is #6

A

radial canal

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21
Q

What is #7?

A

tube feet

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22
Q

What is #8?

A

water vascular system

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23
Q

What is #9?

A

Intestine

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24
Q

What is #10

A

esophagus

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25
Q

What is #11?

A

Digestive system

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26
Q

What is #12?

A

Gonad

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27
Q

What is #13?

A

anus

28
Q

What is #1

A

Esophagus

29
Q

What is #2?

A

calcareous plate

30
Q

What is #3?

A

protractor muscle

31
Q

What is #4?

A

test

32
Q

What is #5?

A

retractor muscle

33
Q

What is #6?

A

teeth

34
Q

What is #7?

A

mouth

35
Q

What two structures do sea urchins move with?

A

Moveable spines on test and tube feet

36
Q

What do sea urchins eat?

A

plankton, algae, tiny organic matter in sand

37
Q

What surface is by #13?

A

aboral

38
Q

What surface is by #4?

A

oral surface

39
Q

What is Aristotle’s Lantern?

A

5 separate bones that chomp on their food

40
Q

What are two ways that sand dollars are adapted to living in soft bottoms?

A
  • The test is flat which allows them to wedge themselves into the sand
    • Traps food particles in spine from ocean current
41
Q

How do sea cucumbers feed?

A

they feed plankton with tentacles in their mouth

42
Q

What do sea cucumbers use evisceration for?

A

to get away from predators

43
Q

What animals are in Phylum Chordata?

A

Tunicates, Lancelets, Fish

44
Q

List 4 characteristics that all chordates have

A
  • Notochord
    • Dorsal nerve cord
    • Pharyngeal gill slits
    • Post anal tail
45
Q

What is the notochord?

A

a stiff rod that runs down the length of the body for support and muscle attachment.

46
Q

What is the dorsal nerve?

A

transmits nerve signals

47
Q

What is a pharyngeal gill slits?

A

gills slits in the throat region

48
Q

What is a post anal tail?

A

tail that extends past the anal region

49
Q

What is #1?

A

gill slits

50
Q

What is #2?

A

notochord

51
Q

What is #3?

A

post-anal tail

52
Q

What is #4

A

nerve tube

53
Q

What animal is this?

A

turnicate larva

54
Q

Sea squirts are in what subphylum?

A

Subphylum Urochordata

55
Q

What is #1?

A

excurrent siphon

56
Q

What is #2?

A

genital duct

57
Q

What is #3?

A

anus

58
Q

What is #4?

A

intestine

59
Q

What is #5?

A

incurrent siphon

60
Q

How do sea squirts feed?

A

filter feed

61
Q

What is #6?

A

tunic

62
Q

What is #7?

A

pharynx

63
Q

what is #8

A

heart

64
Q

What is #9?

A

Gonad (testes and ovary)

65
Q

What is #10?

A

stomach

66
Q

What two subphylum are in Phylum Chordata?

A
  • Subphylum Urochordata
    • Subphylum Vertebrata
67
Q

What 4 characteristics does the subphylum vertebrata have?

A
  • Cranium
    • Backbone of vertebrae
    • Vertebrae surrounds spinal cord
    • 2 pairs of appendages

Wildlife Biology (31 decks)

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