Biology Standard 6

The Sun…• Is the source of all energy on Earth

• Photosynthesis: plants/phytoplankton

• Autotrophs: orgs make own food

GO SUNS!

• Diagram that shows where energy goes in an ecosystem.

• Each level: trophic level• Bottom Primary

Producers: plants and phytoplankton; take sun energy chemical glucose.

Food Chains

Phytoplankton: Primary

Producer

Plants: Primary Producers

Primary Consumer: Eats a Prim. Prod

Secondary Consumer: Eats a Prim. Consumer

Tertiary Consumer: Eats a Sec. Consumer

Consumers

• Org that eats a primary producer: primary consumer (herbivore)

• Org that eats a primary consumer: secondary consumer (carnivore)

• Org that eats a secondary consumer: tertiary consumer South Africa

Decomposers• Feed off dead organic matter

in soil, release nutrients.

• Fungi and Bacteria

Banana Slug

Decomposers

Amazon Food Chain Video

Grassland Biome ExampleArrows show where energy is going!

Prim. Producer Prim. Consumer Sec. Consumer

Tert. Consumer

•Make a Food Chain with your Neighbor Right

Now!!!

• As you go up the trophic levels, energy is lost.

• Rule of 10: 10% of energy in 1 trophic level is available to orgs at next level.

• Other energy is wasted as heat in env.

Energy Pyramid

Energy Wasted as Heat

Food Webs

• Used to diagram feeding relationships, more complex.

• Shows all organisms in a system that eat each other.