Food Chains and Food Web

What Are Some Parts of a Food Chain and a Food Web?

Key Words• Consumer

– A living thing that eats other living things• Food chain

– Pathway of energy through an ecosystem• Food Energy

– Where energy gets passed from one consumer to another.

• Food web – Interconnecting food chains in an ecosystem, which

shows many energy relationships• Producer

– Living things that make their own food by photosynthesis

a. List the organisms that you think are producers?• Roots, seeds, leaves, stems, and fruits

b. Why are they called Producers?

• They make food (glucose) by photosynthesis

c. List the organisms that you think are primary consumers

• Rabbit

• Mouse

• Earthworm

• Cricket

• Small insects

d. Why are they called primary consumers? • Primary consumers, which are herbivores

eat producers.

e. List the organisms that you think are secondary consumers.• Fox

• Robin

• Snake

• Hawk

• Mouse

• Owl

f. Why are they called secondary consumers?• They eat consumers

g. Herbivores are organisms that eat plants. List the herbivores in the food chains.

• Rabbit

• Mouse

• Earthworm

• Cricket

• Small Insects

h. How does your list of herbivores compare with your list in question c?• They are the same organisms

i. Carnivores are organisms that eat other animals. List the carnivores in the food chains.

• Fox

• Robin

• Snake

• Hawk

• Mouse

• owl

J. How does your list of carnivores compare with your list in question e?

• They are the same.

K. Make two food chains using animals not listed in the above food chains.

Food Webs and Chains• Get in groups of 2• One person in your group get the following

color pencils:– Green– Orange– Purple– Yellow– Red– Blue– Pink– Light Blue

PlantParts

PlantParts

PlantParts

PlantParts

PlantParts

PlantParts

PlantParts

PlantParts

Cricket

Robin

Snake

Owl

Earthworm

Robin

Fox

Crickets

Mouse

Fox

SmallInsects

Mouse

Owl

SmallInsects

Mouse

Hawk

Mouse

Snake

Hawk

Rabbit

Fox

Rabbit

Hawk

Plant parts

Crickets Earthworm

Small insects MouseRabbit

Robin

Mouse SnakeOwlHawk

Snake

OwlFox

Hawk

OwlFox

Phytoplankton (Aquatic) -Protist-Euglena-Diatoms

Plants (Land)

Zooplankton- Herbivores and Omnivores

Omnivores and Carnivores

Mostly Carnivores

I. Out of Energy PyramidA. Decomposers

1. Bacteria2. Fungi

B. Scavengers1.Buzzards 2.Opossum3.Crow

Questions on Back (254)

1. How many of the food chains you made in Figure 1 include the following animals?

2. How many food chains include plant parts?• 12 (all of them)

3. Give the names of the producers that are in the food web. • Plants

4. Give the names of the of the consumers that eat both plants and animals.

• Mouse

5. What would happen to the food web if all the plants were removed?• Everything would die.

5 b. Explain your answer.

• Plants are involved in all of the food chains and are the base of the food chain in all ecosystems.

6. What might happen to the owl population is there were less rabbits, mice, and snakes in a certain year?• There would be less owls because of the

lack of food

7. What organisms will be affected if crickets, small

insects, and earthworms are killed by pesticides?

• Robins will be most affected because these three organisms are their only food in the food web. Other organisms that eat these three organisms also feed on other organisms in the food web.

8. Draw three food chains below that can be connected in a food web. Show producers and consumers that you might see in your back yard or on your way to school