1 / 16

Nutrition and Energy Flow

Nutrition and Energy Flow. Chapter 2, section 2. How organisms Obtain Energy. Energy drives all events Important characteristic of a species niche is how energy is obtained Ultimate source of energy is the sun. Autotrophs. The Producers

channer
Download Presentation

Nutrition and Energy Flow

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. Nutrition and Energy Flow Chapter 2, section 2

  2. How organisms Obtain Energy • Energy drives all events • Important characteristic of a species niche is how energy is obtained • Ultimate source of energy is the sun

  3. Autotrophs • The Producers • Plant use photosynthesis to manufacture their own food. • Autotrophs – organisms that use energy from the sun or stored in chemical compounds to manufacture their own nutrients.

  4. Heterotrophs • The Consumers • Heterotrophs – organisms that cannot make their own food and must feed on other organisms. • Scavengers – organism that do not kill for food but eat animals that have already died. • Herbivore • Carnivore • Omnivore

  5. Herbivore • Herbivore – eat plants

  6. Carnivore • Carnivore – eats animals

  7. Omnivore • Omnivore – eats both plants and animals

  8. Decomposer • Decomposers – Breakdown complex compounds of dead decaying plants and animals.

  9. Food Chains • Food Chain – simple model that scientists use to show how matter and energy move through an ecosystem. • Consists of 3 links or steps • Trophic level represent link in the chain • Energy is lost at each step as heat • Like energy, nutrients are also moved through the organisms at the different levels • These nutrients are being recycled

  10. Food chain

  11. Food Web and Energy Pyramid

  12. The Water Cycle • Water begins its cycle through the ecosystem when plants absorb water through their roots • As water moves through the ecosystem, plants and animals lose it through respiration • Decomposition also releases water back into the ecosystem

  13. The Carbon Cycle • Carbon is found as Co2 in the air and oceans • The first step of this cycle happens when the producers take it in • This carbon is moved on when consumers eat these producers • The carbon is then put back into the environment by respiration and decay

  14. The Nitrogen Cycle • Atmospheric nitrogen is the most occurring gas in the air but organisms can't use this form of nitrogen • Lightning or some types of bacteria can turn atmospheric nitrogen into usable compounds • Plants use these compounds and turn them into nitrates • Consumers eat the plants and turn the nitrates into protein • The nitrogen returns to the environment by death and decay

  15. The Cycling of Phosphorus • Phosphorus cycles in two different ways • Plants get the phosphorus from the soil and animals get the phosphorus by eating the plants • The phosphorus is returned when the animal dies and decomposes • The second way is started when its washed into the sea and becomes incorporated into rock • Millions of years later, the phosphorus is driven from the rocks becoming exposed again

More Related