Food chains and Food Webs

Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

What is the role of a producer?

• Use sunlight to make food
• Gain energy from eating other organisms
• Keep other species from overpopulating
• Breaking down dead stuff 

What is the role of decomposers in a food chain?

• Use sunlight to make food
• Eat other organisms to gain energy
• Make the food for the whole food chain
• Break down dead organisms and add nutrients to the soil

Which of these organisms would receive energy from the snake?

• Plant
• Rabbit
• Mouse
• Hawk

Observe the food chain above. Which organism’s population would increase if finches were removed from the ecosystem?

• Grass

• Grasshopper

• Snake

• Hawk

What is a food web?

• a web created by a spider to trap its food
• a network of food chains in an ecosystem
• a community of plants and animals
• the food that one animal eats

How many predators eat the rabbit for energy in this food web?

• 2

• 3

• 4

• 5

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

What are animals called in a food chain?

• Producers
• Consumers
• Decomposers
• Plants

Which food chain is in the correct order?

• cat, grass, bird, snail
• bird, snail, grass, cat
• grass, snail, bird, cat
• grass, cat, bird, snail