food webs

Which group is not represented in the food web?

• producers

• primary consumers

• secondary consumers

• decomposers

What do the arrows in the food chain indicate about the flow of energy in an ecosystem?

• Energy is continuously recycled by the organisms in an ecosystem.

• Energy flows in one direction in an ecosystem, from producers to consumers.

• More of the available energy in an ecosystem is given to large animals than to small animals.

• Organisms at the end of the food chain receive more energy than those at the beginning.

In this energy pyramid, which organism would most likely be in level 2?

• bird

• fox

• caterpillar

• tree

Which one of the following is true of grass in an ecosystem?

• It converts oxygen to glucose.

• It produces carbon dioxide from oxygen and water.

• It produces glucose from carbon dioxide and water.

• It converts water to energy.

The interaction of living and non-living things in a habitat is called ___

• an environment
• an ecosystem
• a food web
• a food chain

Example of a consumer

• worm
• bacteria
• mushroom
• hawk

Example of a decomposer

• fungus
• mouse
• plants
• frogs

A tree is a ....

• composer
• decomposer
• producer

Humans are considered...

• consumers
• decomposers
• producers

What is a producer?

• an organism that gets energy from eating other organisms
• an organisms that uses sunlight to make its own food
• an organism that gets energy from eating dead organisms, non-living material or waste
• an organism that uses chemical energy to make its own food