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BIOL 108 > Lecture 24 > Flashcards

Lecture 24 Flashcards

1
Q

What two phyla does Deuterostomia include

A

Echinodermata & Chordata

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2
Q

What are Echinodermata

A

sea stars, sea urchins, sea lilies, sea cucumbers
-slow & sessile
-diffuse nervous system (no brain)
-mouth at center of arms

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3
Q

Characteristics of echinodermata

A

Adults: Penta-radial symmetry
-engage in broadcast spawning (fertilization occurs in open water)
-larvae are planktonic
-have tube feet

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4
Q

What does madreporite mean

A

allows water to flow in & out of the system

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5
Q

What are the 5 Echinoderm classes

A
  1. Class Asteroidea (sea stars/sun stars)
  2. Class Echinoidea (sea urchins/sand dollars)
  3. Class Holothuroidea (sea cucumbers)
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BIOL 108 (12 decks)

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