tarik-miranda
Uploaded by
14 SLIDES
280 VIEWS
140LIKES

Understanding Animal Adaptations: Invertebrates, Symmetry, and Reproduction

DESCRIPTION

This lecture provides an overview of animal adaptations focusing on invertebrates, their body symmetry types—radial, bilateral, and asymmetrical—along with examples such as sponges and cnidarians (jellyfish, corals). Essential topics include the basic structure and reproduction methods of sponges and cnidarians, highlighting their hermaphroditic traits and asexual reproduction strategies. Through group discussions and assigned readings, students will deepen their understanding of these fundamental concepts in biology and develop insights into the vast diversity of animal life.

1 / 14

Download Presentation

Understanding Animal Adaptations: Invertebrates, Symmetry, 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. Lecture 63 Mr. Sover 16-17 February 2010

  2. Collect Homework • Pass back homework? • Go over homework

  3. Animal Adaptations • Groups

  4. Invertebrates • What are they? • What percentage of animals are they?

  5. Body Symmetry • Asymmetrical • Radial symmetry • Cnidarians (picture a bike) • Bilateral Symmetry • Anterior vs. posterior • Dorsal vs. ventral

  6. Sponge • Least complex invertebrate • Composition • Two layers of cells • Central Cavity • How do they obtain oxygen/food?

  7. Reproduction • Asexual/sexual • Asexual – fragments • Sexual – hermaphroditic (sperm/eggs)

  8. Sponges!

  9. Cnidarians • Jellyfish, corals, sea anemones • No longer just two cell layers, but two tissue layers • Outer is called the ectoderm • Inner is called the endoderm

  10. Portuguese Man o' War • Box Jellyfish Lion’s Mane

  11. Reproduction • Sexually • Jellyfish which are hermaphrodites • Asexually • Polyps - buds

  12. Homework • Read pp. 456-462 and do 1-3 and 5 on page 462.

More Related