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The Food Chain

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David Wong

on 4 May 2015

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Transcript of The Food Chain

The Food Chain:
the flow of energy through a community

It is an animal that hunts and kills
other animals for food

What is an animal who eats
other animals called?
a carnivore or omnivore
They are the animals that
predators hunt

They also give the predator

What are other names for prey?
scavengers, herbivores, omnivores
Food Web (pg. A84)
It is all the food chains in a community

It is made up of all the food chains in an

Some organisms are part of more than one food chain

Sometimes changes happen in the food web
pesticides, size of a population, weather
Why are food chains and food webs so important anyway?
you have organism cards, string, and tape

1. using these supplies, work together as a group to construct a food chain

2. make sure to read the organism profile on the back to make sure all the organisms you have belong in that food chain

3. you may trade organisms with other groups if there is an organism that better fits the ecosystem of your food chain

4. when finished, come to the front and properly place your food chain to the sun

5. pick someone to present your food chain to each group

Hint: What is the ultimate source of energy?

provides energy for all organisms

The Sun

Stronger organisms have more energy
A species high on the food web is a predator to everything below it
Carnivores can exist in a plant free world if their prey reproduce enough
Students often think of feeding relationships as linear
They think arrows represent who eats whom rather than flow of energy
Primary Producers
Make its own food from primary energy source (the sun)
Turn inorganic compounds into organic compounds
energy is continually lost
Example: plants, vegetables, etc.
Secondary Consumers
Secondary consumers eat the primary consumers.
Examples of secondary consumers fall into one of two categories: carnivores or omnivores
Carnivores are animals that eat only the meat
Omnivores are animals that eat the meat of other animals as well as vegetation; they are carnivores and herbivores.
Primary Consumers
Primary consumers are animals that eat primary producers; they are also called herbivores.
Herbivores only eat plants.
The amount of energy retained by primary consumers depend on their diets
The primary consumers now have energy, and they can be eaten by other organisms that are called secondary consumers
Tertiary Consumer
Quaternary Consumers
Quaternary consumers eat tertiary consumers.
They are generally meat eaters
some are herbivores as well ex. Bear eats fish by the rivers and eat berries in the woods.
all organisms die at some point in life
eat the dead organisms,
recycle some of the leftover energy back into the ecosystem
Decomposition increase the growth and reproduction of bacteria and fungi
eat secondary consumers
receive only 1 unit of energy because about 90% of the energy is lost each time an organism is consumed
carnivores that feed on other carnivores
Usually the tertiary consumer is the "top predator," which means they cannot be eaten by other predators
However, some are eaten by quaternary consumers
5, Matter and Energy in Organisms and Ecosystems

Students who demonstrate an understanding can:

5 -PS3- 1 Use models to describe that energy in animals' food (used for body repair, growth, motion, and to maintain body warmth) was once energy from the sun
5-LS1-1 Support an argument that plants get the materials they need for growth chiefly from air and water
5-LS2-1 Develop a model to describe the movement of matter among plants, animals, decomposers, and the environment
It shows us how energy is passed from one organism to another and how each organism is related to the other
Energy is important to the survival of every organism
consists of producers, consumers, and decomposers
shows who is eating who
a single chain of organisms that provide energy to the other by consumption
Food Chains
Full transcript