9. Invert II

9. Invert II - Exercise # 9 Invertebrate Diversity...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Exercise # 9 Invertebrate Diversity II- Platyhelminthes, Brachiopods, Mollusca, and Annelida
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Review • Last week we examined the evolutionary changes that occurred as the Kingdom Animalia diverged on its own; we then discussed how these changes have been used to define the Phyla Porifera, Cnidaria, Arthropoda, and Nematoda and their classes. • Characteristics that we examined: – Cellular, Tissue, or Organ/System Organization – Symmetry – Type of Coelom – Embryonic Development
Background image of page 2
3 Review Tissue Layers: – Endoderm – Mesoderm – Ectoderm Body Cavities: – Acoelomate – Pseudocoelomate – Coelomate
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Today • Domain: Eukarya –Kingdom: Anamalia • Phyla (studied today) Platyhelminthes Brachiopods Mollusca Annelida
Background image of page 4
5 Today’s lab Coeloms Today’s lab
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 The Acoelomates
Background image of page 6
7 (flatworms) • Flat bodies • Triploblastic • Acoelomate – no body cavity • Bilateral symmetry • Simple nervous system, exhibit first organ system • First example of cephalization (development of head) • Free living, Mostly marine • Flattened shape (waste directly into surrounding water) • Both sexual and asexual reproductive abilities
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8 3 Classes of Plathyhelmenthes - Turbellaria ( free living) - Trematoda ( parasitic flukes) - Cestoidia ( tapeworms)
Background image of page 8
9 • Free living • Have protonephridia (flame cells) osmoregulatory • “eyespots” photoreceptive neurons (ocelli) Class Turbellaria
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/20/2009 for the course BIOL 112 taught by Professor Vaughn during the Spring '08 term at Texas A&M.

Page1 / 39

9. Invert II - Exercise # 9 Invertebrate Diversity...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online