Echinodermata Flashcards
1
Q
Feeding
A
Seas Stars - Carnivores
Sea Urchins - Herbivores
Sea Cucumbers - Detritivore
Crinoids - Filter Feeding
2
Q
Major Parts of the Water vascular system
A
- Madreporite
- Stone Canal
- Ring Canal
- Radial Canal
- Tube Feet
3
Q
Madreporite
A
Entrance for water into the water vascular system
4
Q
Ring canal
A
Central canal where all canals branch from
5
Q
Tube feet
A
- Have Ampullae
- The ampullae allows the foot with suction cup to stick to prey and or ground
6
Q
Class Crinoidea
A
- Mouth and Anus on the oral surface
- Sticky mucus for filter feeding
- Cirri - Help with attachment to the ocean floor.
7
Q
Class Ophiuroidea
A
- Madreporite on oral surface
- Calcareous shields on the aboral surface
- No ambulacral groove
- Tube feet w/out suckers (Not used for locomotion)
- Incomplete gut
8
Q
Class Asteroidea
A
- Anus and Madreporite on aboral side
- Ambulacral grooves with tube feet
- Tube feet w/ suckers
-Cardiac Stomach - Can be removed from the outside of body to begin digestion
- Pyloric Stomach - Well developed moveable spines .Have pedicellariae organs
9
Q
Class Echinoidea
A
- Anus and Madreporite on aboral surface
- Tube feet with suckers
- Have well-developed moveable spines
- Have aristotle’s lantern for feeding
10
Q
Class Holothuridea
A
- Cylindrical Body with no arms
- Madreporite is internal
- Lies free in the coelomic cavity
- tube feet with suckers
- Mouth surrounded by branching tentacles
- Use respiratory tree for gas exchange
- Evisceration of cuvierian tubules is an example of autonomy in echinoderms
