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Relationships in Ecosystems
Transcript of Relationships in Ecosystems
(cc) image by nuonsolarteam on Flickr
The Sun is at the beginning of every food chain. The sun is the ultimate source of energy. Wihtout the sun no plants could grow
Organisms that make their own food using energy from sunlight
Organisms that cannot make their own food are called consumers. The primary consumer in all food chains are herbivores. Herbivores are animals that only eat producers (plants).
It is the second consumer. The secondary consumer can be a omnivore or carnivore. A omnivore is an organism that eats both producers (plants) and consumers (animals).
Tertiary (Third) Consumers
These are also consumers. They are at the top or right under the top of the food chain. These animals are carnivores that eat the secondary consumers (carnivores and omnivores.)
I can explain how energy is cycled through an ecosystem.
I can describe the roles and relationships of the organisms within an ecosystem.
I can describe how food chains, food webs, and energy pyramid works.
What are the organisms roles (jobs) in an ecosystem?
What starts life in an ecosystem?
How do they all work together?
These are consumers at the top of the food chain. They eat teritary consumers. These are often times animals like lions, hawks, etc. Most quaternary consumers have NO ENEMIES!
Organisms that break down dead and decaying matter into wastes and simpler substances are called decomposers. Decomposers get energy in this way. The decomposers return the substances to ecosystems as nutrients. Worms, bacteria, and fungi are examples of decomposers.
Decomposers are RECYCLERS!
They recycle the waste and turn it into nutrients that are released back into the soil, air and water.
They form food chains. Food chains show how energy is passed from one organism to another.
I Can Statements
Identify the role each organism plays in their ecosystem.
Primary (first consumer)
Primary (first consumer)
Create a food chain using those same organisms.
Why do they call plants "producers"?
Why do they call animals "consumers"?
Identify the food chains you see in this food web.
The energy in all ecosystems comes from the sun.
Producers are plants. Plants use the energy from the sun to make their own food.
Primary consumers are the first consumers in a food chain. Primary consumers obtain energy from consuming the producer.
The secondary consumer is the SECOND consumer in a food chain. Secondary consumers CONSUME the first consumer. Secondary consumers are usually carnivores or omnivores.
Arrange your cups into a food chain. Be sure that all members of your food chain belong to the same ecosystem
Mouse (Primary Consumer)
Snake (Secondary Consumer)
Hawk (Third Consumer)
What is shown in a food web?
What is shown in a food chain?
What happens when more than one consumer can eat the same organism in the food chain?
Which direction do the arrows point in a food chain or food web?
Compare and contrast food chains and food webs
Quaternary (Fourth) Consumers
What does an energy pyramid show?
Which level of the pyramid supports more life and gets more energy?
Why are there more producers than consumers?
What are the three roles in every ecosystem?
What are the three types of consumers?