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BIOL 202 > Phyla Echinodermata > Flashcards

Phyla Echinodermata Flashcards

1
Q

The four classes of the echinoderms

A
  • Crinoidea
  • Asteroidea
  • Ophiuroidea
  • Echinoidea
  • Holothuroidea
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2
Q

Class Crinoidea

A

Sea Lillies

Feathered stars

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3
Q

Class Asteroidea

A

Sea stars

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4
Q

Class Ophiuroidea

A

Sea Urchins

Sand dollars

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5
Q

Class Holothuroidea

A

Sea cucumbers

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6
Q

Characteristics of Echinodermata

A
  • calcareous endoskeleton
  • water vascular system
  • complete digestive system
  • pentaradial symmetry and biradial symmetry in larvae
  • nervous system (nerve net, nerve rings & radial nerves)
  • marine water only
  • mainly sessile
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7
Q

Path of the water vascular system in Echinoderms

A

Madreporite > stone canal > ring canal > radial canal > tube feet

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8
Q

Characteristics of Chordates

A 
Pharyngeal slits 
Post-anal tail
Thyroid gland development 
Notochord 
Dorsal nervous cord
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BIOL 202 (10 decks)

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