1 / 9

Multicellular Organisms

Multicellular Organisms. Section 2.3. Animals. Consumers – need to get energy from other organisms predator – hunts other animals prey – hunted by others for food. Animals. Heterotroph – feeds on or eats other organisms Herbivores – feed on plants or algae

sevita
Download Presentation

Multicellular Organisms

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 Organisms Section 2.3

  2. Animals • Consumers – need to get energy from other organisms predator – hunts other animals prey – hunted by others for food

  3. Animals • Heterotroph – feeds on or eats other organisms • Herbivores – feed on plants or algae • Carnivores – feed on other animals • Omnivores – feed on plants and animals

  4. Digestion • Process of breaking down food so that it may be absorbed by cells • Some organisms can take food directly into cells (sponges) • Some have one opening for food to go in and waste to go out (jellyfish) • Some have a tube-like system where food comes in one way and waste goes out another (lion)

  5. Digestion • Physical and chemical activities are used to digest food (Chewing, churning, gastric juices)

  6. Cellular Respiration C6H12O6 + O2 CO2 + H2O + Energy • Oxygen is usually taken in by respiratory system (spiracles, gills, lungs) • Most animals can store food

  7. Behavior • Any visible response to a stimulus • Hunting • Drinking • Can be inherited or learned • Weaving a spider web (inherited) • Which organisms to avoid (learned)

  8. Categories of Behavior • Individual • Meeting basic needs (obtaining food, shelter) • Interactions between same species • Social behaviors (mating, working) • Interaction between different species • Predation, commensalism, mutualism

  9. Response to Seasonal Changes • Migration • Movement of animals to a different region • Hibernation • Sleeplike state that lasts for extended periods

More Related