1 / 15

Invertebrates Phylum Echinodermata

Invertebrates Phylum Echinodermata. Vocabulary 0ssicle = protective spines on a sea star Ampulla = a bulb-like sac at the base of a tube foot that functions in movement Bipinnaria = free swimming larva. Vocabulary Pedicellariae = pincer-like structure that protects and cleans body surface

norah
Download Presentation

Invertebrates Phylum Echinodermata

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Invertebrates Phylum Echinodermata

  2. Vocabulary 0ssicle = protective spines on a sea star Ampulla = a bulb-like sac at the base of a tube foot that functions in movement Bipinnaria = free swimming larva

  3. Vocabulary Pedicellariae = pincer-like structure that protects and cleans body surface Madreporite = sieve-like plate on the abdomen where water enters

  4. General Characteristics A. Undergo Metamorphosis - Bipinnaria to bottom-dwelling adult B. Endoskeleton = internal skeleton C. Water Vascular System - aids in movement and feeding

  5. General Characteristics D. Tube Feet = help with movement, feeding, respiration, excretion E. Nervous System - no head or brain F. Fossils - date back to Cambrian period (over 500 million years ago) G. Radial Symmetry

  6. Reproduction A. Asexual = regeneration (if part of central disk is attached) B. Sexual = releases eggs from holes under arm; eggs form tiny swimming larvae; larvae settle on bottom & develops into sea star

  7. Water Vascular System (network of canals where muscle contraction permits movement) A. Water enters sieve plate; passes through madreporite and down a canal B. Radial canals carry water to tube feet

  8. Water Vascular System C. Muscles contracts forcing water into ampulla; creates suction; suckers grip surface D. Ampullae contracts; water enters feet, releasing grip and feet extend

  9. Other Echinoderms A. Crinoidea “lily-like”= sea lilies and feather stars

  10. Echinoderms B. Asteroidea “star-like” = starfish; live in coastal waters and rocky shores

  11. Echinoderms C. 0phiuroide “snakelike” = largest class; basket stars and brittle stars

  12. Echinoderms D. Echinoidea “hedgehog like” = sea urchins & sand dollars

  13. Echinoderms E. Holothuroidea = soft bodies; armless sea cucumbers

  14. Gonads Stomach Tube Feet Sieve Plate Digestive Glands Radial Canal

More Related