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Wildlife Biology > Invertebrates #3 > Flashcards

Invertebrates #3 Flashcards

(67 cards)

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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
What is #11?
Digestive system
26
What is #12?
Gonad
27
What is #13?
anus
28
What is #1
Esophagus
29
What is #2?
calcareous plate
30
What is #3?
protractor muscle
31
What is #4?
test
32
What is #5?
retractor muscle
33
What is #6?
teeth
34
What is #7?
mouth
35
What two structures do sea urchins move with?
Moveable spines on test and tube feet
36
What do sea urchins eat?
plankton, algae, tiny organic matter in sand
37
What surface is by #13?
aboral
38
What surface is by #4?
oral surface
39
What is Aristotle's Lantern?
5 separate bones that chomp on their food
40
What are two ways that sand dollars are adapted to living in soft bottoms?
* The test is flat which allows them to wedge themselves into the sand * Traps food particles in spine from ocean current
41
How do sea cucumbers feed?
they feed plankton with tentacles in their mouth
42
What do sea cucumbers use evisceration for?
to get away from predators
43
What animals are in **Phylum Chordata?**
Tunicates, Lancelets, Fish
44
List 4 characteristics that all chordates have
* Notochord • Dorsal nerve cord • Pharyngeal gill slits • Post anal tail
45
What is the notochord?
a stiff rod that runs down the length of the body for support and muscle attachment.
46
What is the dorsal nerve?
transmits nerve signals
47
What is a pharyngeal gill slits?
gills slits in the throat region
48
What is a post anal tail?
tail that extends past the anal region
49
What is #1?
gill slits
50
What is #2?
notochord
51
What is #3?
post-anal tail
52
What is #4
nerve tube
53
What animal is this?
turnicate larva
54
Sea squirts are in what subphylum?
Subphylum Urochordata
55
What is #1?
excurrent siphon
56
What is #2?
genital duct
57
What is #3?
anus
58
What is #4?
intestine
59
What is #5?
incurrent siphon
60
How do sea squirts feed?
filter feed
61
What is #6?
tunic
62
What is #7?
pharynx
63
what is #8
heart
64
What is #9?
Gonad (testes and ovary)
65
What is #10?
stomach
66
What two subphylum are in Phylum Chordata?
* Subphylum Urochordata * Subphylum Vertebrata
67
What 4 characteristics does the subphylum vertebrata have?
* Cranium • Backbone of vertebrae • Vertebrae surrounds spinal cord • 2 pairs of appendages

Wildlife Biology (31 decks)

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