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An organism that needs to eat other organisms to obtain energy is known as a:

• autotroph
• producer
• heterotroph
• mutualist

An organism that lives by breaking apart dead organic matter into simpler parts is...

• scavenger
• consumer
• decomposer
• carnivore

In this image, the grass is the ______________.

• Primary Consumer
• Secondary Consumer
• Heterotroph
• Producer

The primary consumer in this food chain is the ____________.

• Frog
• Eagle
• Grasshopper
• Python

Which of the animals in this food web is a secondary consumer?

• Hawk
• Lizard
• Mouse
• Snake

Which animal is a tertiary consumer?

• Jackal
• Wild Cat
• Lion
• Owl

The smallest part of the ecosystem is always the ____________.

• Primary Producers
• Secondary Consumers
• Primary Consumers
• Tertiary Consumers

The largest part of an ecosystem is always the ________________.

• Primary Consumers
• Primary Producers
• Quarternary Consumers
• Secondary Consumers

Organisms who are members of the same species in an ecosystem.

• Organism

• Population

• Organ

• Community

The diagram shows part of an aquatic food web for a stable lake ecosystem in Connecticut. What is the source of energy for the algae?

• waves

• sunlight

• bacteria

• rotifers, water fleas and tadpoles