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Animal Diversity Lab > Lab 10 - Echinodermata > Flashcards

Lab 10 - Echinodermata Flashcards

1
Q

Echinodermata are _____stomes

A

deuterostomes

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2
Q

deuterostomes (3)

A

blastopore becomes the anus, being enterocoelous, and having radial/intermediate cleavage

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3
Q

what feature has Echinodermata re-evolved?

A

radial symmetry (pentaradial)

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4
Q

another unique feature of echinoderms is the _____ vascular system

A

water

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5
Q

the water vascular system evolved from part of the _____

A

coelom

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6
Q

water vascular system

A

uses seawater or coelomic fluid to generate hydraulic pressure to operate tube feet

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7
Q

what structure do Echinoderms uses for locomotion and prey capture?

A

tube feet

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8
Q

echinoderms live in exclusively _____ environment

A

marine

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9
Q

members of Echinodermata have an _____skeleton

A

endo

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10
Q

what is the skeleton of Echinoderms made from?

A

calcareous ossicles

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11
Q

oral surface

A

where the mouth is

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12
Q

aboral surface

A

opposite with the mouth and usually with an anus

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13
Q

larvae in Phylum Echinodermata are all this kind of symmetry

A

bilateral

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14
Q

autotomy

A

the ability to deliberately shed parts of their own body

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15
Q

Class Crinoidea

A

sea lilies

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16
Q

what distinguishes members of Class Crinoidea from the others? (2)

A
  • a mouth that faces upward
  • water vascular system uses coelomic fluid instead of seawater
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17
Q

where are the tube feet of Crinoids located? (2)

A
  • calyx
  • oral side
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18
Q

Members of Class Crinoidea are what kinds of feeders?

A

filter feeders

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19
Q

What are the feeding structures of Class Crinoidea called

A

cirri

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20
Q

Class Ophiuroidea has these two types of animals (2)

A
  • brittle stars
  • basket stars
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21
Q

what makes members of Class Ophiuroidea unique?

A

they have an incomplete gut

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22
Q

Class Ophiuroidea have no _____ groove on the arms

A

ambulacral

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23
Q

How do brittle/basket stars (Class Ophiuroidea) move?

A

they use their entire slender arms instead of just their tube feet

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24
Q

Class Ophiuroidea have shields which are…

A

protective ossicles

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25
Q

Class Echinoidea has what types of animals? (3)

A
  • sea urchins
  • sand dollars
  • sea biscuits
26
Q

What do members of Class Echinoidea use for protection and support?

A

calcareous spines

27
Q

test

A

a collection of fused calcareous endoskeletal plates called ossicles

28
Q

what is the jaw-like structure found on Class Echinoidea used for feeding?

A

Aristotle’s lantern

29
Q

what are the tiny pincer-like ossicles found on the surface of members of Classes Echinoidea and Asteroidea?

A

pedicellariae

30
Q

pedicellariae function (2)

A
  • cleaning the surface of the body of debris
  • in defense (many discharge toxin)
31
Q

Class Asteroidea contain what kind of animal?

A

sea stars

32
Q

what kind of eaters are members of Class Asteroidea?

A

carnivores

33
Q

How do the arms and central disc of Asteroidea differ from those of Ophiuroidea?

A

The central disc of Asteroidea bears a madreporite on the aboral surface, while Ophiuroidea have the madreporite on the oral surface of the central disc

34
Q

What role(s) does the madreporite play in the water vascular system of Asteroidea? (3)

A
  • pressure regulator
  • serves as a filter to keep out foreign particles
  • serves as an entrance for seawater in the water vascular system
35
Q

what method of food acquisition odes Holothuroidea employ?

A

filter/deposit feeding

36
Q

Class Holothuroidea contains what kind of animals?

A

sea cucumbers

37
Q

Class Holothuroidea exhibit what kind of symmetry?

A

bilateral; they are elongated along the oral/aboral axis

38
Q

feeding tentacles

A

in members of Holothuroidea, they are modified ring of tube feet near the mouth

39
Q

members of Class Holothuroidea use what structure for respiration?

A

respiratory tree that branches off their anus

40
Q

cuvierian tubules

A

in members of Holothuroidea, they are offshoots of the respiratory tree shot through their anus to confuse predators

41
Q

Because Holothuroidea have lost the sharp spines and hard endoskeleton most Echinoderms rely on for protection, how do they defend themselves?

A

if threatened excessively, they may eviscerate their internal organs

42
Q

what class of Echinodermata has a rigid exoskeleton composed of ossicles called plates?

A

Echinoidea

43
Q

Which class does NOT use tube feet for locomotion?

A

Ophiuroidea

44
Q

what is a unique feature to Holothuroidea?

A

respiratory tree

45
Q

name these specimen

A

Phylum Echinodermata
Class Asteroidea

46
Q

name these specimen

A

Phylum Echinodermata
Class Asteroidea

47
Q

name this specimen

A

Phylum Echinodermata
Class Holothuroidea

48
Q

name this specimen

A

Phylum Echinodermata
Class Holothuroidea

49
Q

name these specimen

A

Phylum Echinodermata
Class Crinoidea

50
Q

name these specimen

A

Phylum Echinodermata
Class Crinoidea

51
Q

name these specimen

A

Phylum Echinodermata
Class Ophiuroidea

52
Q

name these specimen

A

Phylum Echinodermata
Class Ophiuroidea

53
Q

name these specimen

A

Phylum Echinodermata
Class Ophiuroidea

54
Q

name these specimen

A

Phylum Echinodermata
Class Ophiuroidea

55
Q

name these specimen

A

Phylum Echinodermata
Class Ophiuroidea

56
Q

name these specimen

A

Phylum Echinodermata
Class Ophiuroidea

57
Q

name these specimen

A

Phylum Echinodermata
Class Echinoidea

58
Q

name these specimen

A

Phylum Echinodermata
Class Echinoidea

59
Q

name these specimen

A

Phylum Echinodermata
Class Echinoidea

60
Q

name these spceimen

A

Phylum Echinodermata
Class Echinoidea

Animal Diversity Lab (11 decks)

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