LEC. Biology EcosystemsBenchmark 2

Explain how energy flows through familiar

ecosystems.

Plant POWER

Comes from the sun

THE FOOD FACTORY

Leaves are the energy factories

of the plant.

Leaves use sunlight,carbon dioxide from air,

and water from rainfall or soilto make food energy.

SUNLIGHTENERGY

Energy from the sunhelps plants make food energy.

Living things need food energy to grow and reproduce. Plantsmake their own food. The cowand the person need to get theirfood.

Click your mouse or press the space bar.

SUNLIGHTENERGY

The plant’s food energy is transferred

to the cow when the coweats the grass. The cow

uses this plant food energyto grow and reproduce.

Click your mouse or press the space bar.

SUNLIGHTENERGY

The cow’s food energy is transferred

to the person when the maneats a hamburger or a steak.

The personuses this cow food energyto grow and reproduce.

Click your mouse or press the space bar.

All living things depend on the sun for energy.

Plants are able to...

From Carbon dioxide in the air and water in the soil

using the sun’s energy.

http://www.cord.edu/faculty/landa/courses/e103w00/sessions/ecosystem.html

http://www.globalchange.umich.edu/globalchange1/current/lectures/kling/highertrophic/trophic2.htm

Pyramid of Biomass

Producer

Herbivore

Carnivore

Carnivore

producerherbivore

carnivore

carnivore

Pyramid of Numbers

Participants and relationships:Food chain, food web, energy pyramid, energy flow,producers, consumers, decomposers

Conservation of Energy

Key Concepts

Energy pyramids for food websin various ecosystems.

Real-world contexts

Which of the following would be considered a correct food chain?

a) Food C n hai Cunl t igh R tabbi

b) Sunlight Cl nt a Cow um nH a

c) Sunlight Cow um n H a Cl nta

d) Human Cl nt a Cunl t igh Cow

e) Vertebrate Cnv rt r t e eb a e Cow um nH a

Click Here for the Question Menu Page

All answers:

A food chain usually starts with energy from the sun being incorporated into plants as food through the process of photosynthesis. The plant is then eaten by a herbivore (plant eater) then it’s eaten by a more complex animal.

Return to the question

A food chain usually starts with energy from the sun being incorporated into plants as food through the process of photosynthesis. The plant is then eaten by a herbivore (plant eater) then it’s eaten by a more complex animal.

Return to the question

Which of the following is NOT a part of a food chain?

a) Producer

b) Consumer

c) Decomposer

d) Herbivore

e) Hydrologic cycle

Click Here for the Question Menu Page

The hydrologic cycle, also known as the water cycle, moves water from the surface to the atmosphere through evaporation and then back to the surface through precipitation.

Return to the question

The hydrologic cycle, also known as the water cycle, moves water from the surface to the atmosphere through evaporation and then back to the surface through precipitation.

Return to the question

Question One

Question Two