1 / 11

Multicellular Organization

Multicellular Organization. Objectives. Describe cell specialization List the levels of organization in living multicellular organisms. Unicellular Organisms. These are single cell organisms Unicellular organisms dominate the Earth. Multicellular Organisms.

jarah
Download Presentation

Multicellular Organization

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. Multicellular Organization

  2. Objectives • Describe cell specialization • List the levels of organization in living multicellular organisms

  3. Unicellular Organisms • These are single cell organisms • Unicellular organisms dominate the Earth

  4. Multicellular Organisms • These organisms are made up of many cells • Cell specialization is the process how cells develop in different ways to perform different tasks

  5. first microscopic life (3.6 bya) • first oxygen appears in atmosphere (1.9 bya) • first multicellular life (900 mya) • first land plants appear (450 mya) • formation of the Atlantic Ocean begins (150 mya) • formation of the Himalayas begins (30 mya)

  6. Evolution of Multicellular Organization • Simple prokaryotes were the first type of life on Earth • Single cell eukaryotes evolved next • Some of these began to form into colonies, like the Volvox • From these colonial organisms, multicellular eukaryotes evolved

  7. Specialized Animal Cells • Examples include: • Red blood cells • White blood cells • Bone cells • Muscle cells

  8. Specialized Plant Cells • An example would be Guard Cells • These regulate gas and water flow from leaves

  9. Levels of Organizations • Cells • Tissues- a group of similar cells that perform a particular function • Organs- many groups of tissues that work together • Organ System- group of organs that work together to perform a specific function

  10. Review • Describe cell specialization • Cell specialization is the process how cells develop in different ways to perform different tasks • List the levels of organization in living multicellular organisms • Tissues • Organs • Organ System

More Related