Energy Flow through an Ecosystem Photosynthesis, Food Chains, Food Webs, & Energy Pyramids

Organisms that can make glucose during photosynthesis Producers Organisms that can make glucose during photosynthesis

Plants use ___________ they receive from the sun & convert it to radiant energy Plants use ___________ they receive from the sun & convert it to ______________ in a process called ____________. chemical energy photosynthesis

6CO2 + 6H2O + sunlight & chlorophyll C6H12O6 + 6O2

Producers use most of the energy they make for ___________. themselves

The energy that is not used by producers can be passed on to organisms that cannot make their own energy.

Organisms that cannot make their own energy Consumers Organisms that cannot make their own energy

A consumer that eats producers to get energy: Is called a (primary) or ___________________ first order consumer

Most of the energy the primary consumer gets from the producer is used by the consumer. Some energy is stored and can be passed on.

A consumer that eats another consumer for energy: Is called a __________ or second order consumer secondary

Most of the energy the secondary consumer gets from the primary consumer is used by the secondary consumer. Some energy is stored and can be passed on.

A consumer that eats a consumer that already ate a consumer: Is called a 3rd order or __________ consumer tertiary

Types of Consumers: Herbivore Omnivores Carnivore Decomposer Organism that cannot make its own food so it consumes plants. Organism that cannot make its own food so it consumes plants and animals. Organism that cannot make its own food so it consumes other animals. Organism that breaks down dead plants and animals to recycle nutrients in the environment. Herbivore Omnivores Carnivore Decomposer Think of examples for each type of consumer!

Consumers that eat other dead consumers are called ________ scavengers

Food Chain The transfer of energy from the sun to producer to primary consumer then to higher order consumers

Label the parts of this food chain: Radiant Energy Tertiary Consumer Producer Secondary Consumer Primary Consumer

More Food Chains

Another way of showing the transfer of energy in an ecosystem Energy Pyramid Another way of showing the transfer of energy in an ecosystem

Food Chains Show Available Energy

Energy Pyramids Show It takes a large number of producers to support a small number of primary consumers It takes a large number of primary consumers to support a small number of secondary consumers Energy is transferred up the food pyramid

Food Webs Interconnected food chains They show the feeding relationships in an ecosystem

What do the arrows represent? Energy transfer from organism to organism in the food web

How are food webs limited models? Food webs do not include all parts (animals and resources) of an ecosystem.

How Many Chains are in this web?

Identify the Producers, Consumers, & Decomposers:

Now let’s try some more. Food Chain: http://www. ecokids Now let’s try some more! Food Chain: http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/index.cfm Food Web: http://www.harcourtschool.com/activity/food/food_menu.html