Echinodermata

1,998 views

Published on

Published in: Technology, Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,998
On SlideShare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
57
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Echinodermata

  1. 1. Nikki & Portia Echinodermata Ophioderma rubicundum Brittle Star
  2. 2. Classification of animal in Phylum <ul><li>five well-defined clases: </li></ul><ul><li>Crinoidea (sea lilies and feather stars), </li></ul><ul><li>Ophiuroidea (basket stars and brittle stars) </li></ul><ul><li>Asteroidea (starfishes) </li></ul><ul><li>Echinoidea (sea urchins, sand dollars, and sea biscuits) </li></ul><ul><li>and Holothuroidea (sea cucumbers). </li></ul>
  3. 3. Body form <ul><li>Spiny-skinned </li></ul><ul><li>Or wart-like bumps </li></ul><ul><li>symmetrical </li></ul><ul><li>Can loose up to 3 limbs </li></ul>
  4. 4. Reproduction <ul><li>Echinoderms have the ability to regenerate new parts asexually. </li></ul><ul><li>They also have separate sexes with reproductive organs in each arm. </li></ul><ul><li>Sexual reproduction involves releasing gametes into the water (external fertilization). </li></ul><ul><li>Seahorses: males give birth </li></ul>
  5. 5. Digestive System <ul><li>Urchins are herbivores (they eat plants) </li></ul><ul><li>starfish are predators and scavengers </li></ul><ul><li>other feed on waste. </li></ul>
  6. 6. Respiratory System <ul><li>Gills on the skin which exchange gases </li></ul>
  7. 7. Living Environment <ul><li>Mainly marine environment </li></ul><ul><li>Live in slightly salty water </li></ul><ul><li>Live in shallow and deep waters. </li></ul>
  8. 8. Circulatory System <ul><li>Open circulatory system </li></ul><ul><li>Cilia circulates fluids through the arms. </li></ul>
  9. 9. Interaction with humans <ul><li>They are more related to humans than any other invertebrate. </li></ul>
  10. 10. Unique Features <ul><li>External skeletons </li></ul><ul><li>There is no head </li></ul><ul><li>Usually have mouth on the underside </li></ul><ul><li>Anus usually on top </li></ul>
  11. 11. Pictures!! Sea Urchin Sea Cucumber Basket Star
  12. 12. Citing <ul><li>  </li></ul><ul><li>Various Authors. Think Quest . May 21, 2009. </li></ul><ul><li><http://library.thinkquest.org/28751/review/animals/7.html> </li></ul>

×