Echinoderma Flashcards
1
Q
Echinoderma
A
- All are marine
- Endoskeleton made of calcium
- Plates(ossicles) with protruding spines
- Coelomates
- lack segmentation
2
Q
What is the metamorphosis of this phylum
A
1) Bilateral symmetric, free swimming larva
2) Pentaradial symmetry sessiler adult
3
Q
What is the water vascular system for?
A
- locomotion
- circulation
- respiration
- feeding
- waste removal
4
Q
Have a nervous system
A
But have no head or brain
5
Q
What is it called when you cut that lil bish in half and it grows into two
A
Regeneration
6
Q
Crinoidea
A
- May have 5~200 arms with sticky tube feet to help capture food
- filter feeders takes in O2
7
Q
Asteroidea
A
Starfish/sea stars
Prey on bivalves
Arms project from central disc
8
Q
Ophiuroidea
A
Largest class of echinoderms Basket stars, brittle stars
9
Q
Echinodea
A
Sea urchins
Sand dollars
Body covered with movable spines
Jaw like structure to grind food: Aristotle’s lantern
10
Q
Holothuroidea
A
Sea cucumber
Five rows of tube feet
Can eject parts of their internal organs(evisceration)
Can regenerate
