Life Science - Ecology Chapter 2 Test

1. What is the original source of almost all the energy in most ecosystems?

• nitrogen
• sunlight
• carbon dioxide

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2. The process by which an organism uses energy from the sun to produce its own food is called ____.

• Heterotroph
• a consumer
• Photosynthesis

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3. Referring to the figure shown below, the cat would be considered a ____.

• primary cosumer
• secondary consumer
• tertiary (3rd) consumer

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4.Since the chipmunk in the food web below eats the plants (producers) first, we refer to it as the _________________________.

• primary consumer
• tertiary (3rd) consumer
• producer

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5. Which of the following is a way in which producers can make their own food?

• chemosynthesis
• photosynthesis
• both of the above

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6. The complex diagram shown in the figure below is an example of a ____, which is all of the interconnected feeding relationships within an ecosystem.

• trophic level
• food web
• nutrient cycle

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7. In the figure above, which organism would receive the highest amount of the sun's original energy?

• frog
• mouse
• wolf

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8. The algae in the figure below is a ____, since it is able to make it's own food.

• decomposer
• producer
• secondary consumer

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9. What animals eat both producers and consumers? (Hint: The animal below is one, so are pigs and us!)

• herbivores
• omnivores
• decomposers

10. Which of the following eats only consumers?

• carnivore
• herbivore
• decomposer