Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

26 Cards in this Set

  • Front
  • Back
**What are the two phylum that only are Deuterostomes
1)Phylum Chordata
2)Phylum Echinodermata
Examples of Echinoderms
Starfish, Sea Cucumber,
Sea Urchins, Sand Dollars, Heart Urchins, Basket Stars, Brittle Stars
Phylum Echinodermata
1)secondary Radial system
(Bilateria at first)
2)**water Vascular System
3)Calcareous endoskeleton(ossicles)
4)Most have Bumps&Spines
5)"Tube feet" (Podia)
6)*All are marine
7)Dioecious, External Fert.
What are functions of Sea urchins' spines
(Phylum Echinodermata)
For *defense and *Locomation
What is functions of "Tube Feet" (Podia) in Phylum Echinodermata
For Locomotion, Feeding,
*** Gas Exchange
Example for Class Asteroidea
(Give the 1)name, 2)genus)
1) Starfish
2) Genus*** Asterias
(Common Atlantic Starfish)
Class Asteroidea
(Phylum Echinodermata)
-" Starfish " Genus *Asterias
-eat Bivalves molluscs
-can regenerate
(need a bit of center piece)
-Sucker tube system
-"Crown of Thorns"
-**Water Vascular system
What is Genus and species of "Crown of Thorns"
in Class Asteroidea,
Phylum Echinodermata
**Acanthaster Planci
-> used to wipe out
"Coral polyps"
**Water Vascular System
(in Starfish)
->class Asteroidea
(phylum Echinodermata)
A system of canal which move water under pressure hydraulic
and it's used for locomotion
What is "little spot on Starfish" called
" Madreporite"

(Where water ocean enter)
The steps of Water Vascular system in starfish
1) Water ocean enter Madreporite
2) It pass thru Stone canal, Ring canal,Radial canal, and Lateral canal in orders
3)Then a bowl-like structure called "Ampulla" force water underpressure
7) Water goes into Tube feet or Podia and make it expand
8) Sucker is located on the tip of tube feet
"Brittle Stars" is in what class and in what phylum?
Class Opiuroidea
(phylum Echinodermata)
Class Opiuroidea
(phylum Echinodermata)
***Tube feet lack Sucker
-A distinct seperation btw central disk and the arms
-longer, more flexible arms than starfish
-some small lizards can lose their tails, and grow them back again. This ability is "tail autonomy." **Autonomy can occur in Brittle stars too.
What is the function of " Autonomy"?
Voluntary release of appendage so as to avoid predators
What are class and phylum of Sea urchin and Sand dollars?
Class Echinoidea
(Phylum Echinodermata)
Class Echinoidea
(Phylum Echinodermata)
-Sea urchins, Sand dollars
-no arms, but do have 5 rows of tube feet that function in slow movement
-have flatten Oral/Aboral axis(Oral=bottom, Aboral=top)
-complex jaw-like structure
What is complex jaw-like structure in Class Echinoidea called? What is its function?
"Aristotle's Lanthern"
Used in feeding
What are class and phylum of
"Sea lilies"?
Class Crinoidea
(Phylum Echinodermata)
Class Crinoidea
(Phylum Echinodermata)
-Sea lilies
-most are sessile (live attached to the substrate)
-has Crinoid stem
What are class and phylum of
" Sea Cucumber"?
Class Holothroidea
(Phylum Echinodermata)
Class Holothroidea
(Phylum Echinodermata)
-Sea cucumber,*Lack of spines
-elongated in their oral–aboral axis
-have reduced endoskeleton
-tube feet around the mouth modified as *"feeding tentacles "
Class Holothroidea (cont.1)
(Phylum Echinodermata)
-are "Deposit feeders"
-Beche de mer (type of sea cucumber that Asians eat)
-Throw up part of GiIi tract
-"Cuvier tubules" used to entangle preys
-"Respiratory Tree"
What is the throw up part of GiIi tract called?
What is "Cuvier Tubules"?
are long white, pink or red structures that are attached to one, or both, respiratory trees. If Sea cucumber is attacked by a predator it will expel this sticky, stringy mass of tubules
What is class and phylum of "Sea Daisies"
Class Concentricycloidea
(Phylum Echinodermata)
genus of Sea Daisies is
*** Genus Xyloplex

found in deep waters off the coasts of New Zealand and the Bahamas.