1 / 9

Understanding Echinoderms: Evolution, Anatomy, and Reproduction

Discover the fascinating world of echinoderms, marine creatures with an internal skeleton, radial symmetry, and a water vascular system. Explore their evolutionary connection to vertebrates, their unique digestive system, and their ability to regenerate body parts. Dive into the five classes of echinoderms, including crinoids, sea stars, brittle stars, sea urchins, and sea cucumbers.

lbrice
Download Presentation

Understanding Echinoderms: Evolution, Anatomy, and Reproduction

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. KEY CONCEPTEchinoderms are on the same evolutionary branch as vertebrates.

  2. Echinoderms have an internal skeleton made of interlocking ossicles. digestive glands anus central disk radial canal ring canal reproductive glands Echinoderms have radial symmetry.

  3. Echinoderms have a water vascular system. tube feet • a series of water-filled ring canals around central disk • canals store water used for circulation and movement • changes in water pressure extend and retract tube feet

  4. Some echinoderms can regenerate limbs or other body parts. • Echinoderms have a complete digestive system. • Most echinoderms reproduce sexually.

  5. There are five classes of Echinoderms. • Feather stars and sea lilies are in the class Crinoidea.

  6. There are five classes of Echinoderms. • Sea stars are in the class Asteroidea.

  7. There are five classes of Echinoderms. • Brittle stars and basket stars are in the class Ophiuroidea.

  8. There are five classes of Echinoderms. • Sea urchins, sea biscuits, and sand dollars are in the class Echinoidea.

  9. Sea cucumbers are the only members of the class Holothuroidea. There are five classes of Echinoderms.

More Related