Biology Test 8/29

What is the main difference between a biome and an ecosystem?

• A) A biome is a living organism, while an ecosystem is not.

• B) An ecosystem is a smaller part of a biome where living and non-living things interact.

• C) A biome can only be found in tropical areas, while ecosystems are global.

• D) Ecosystems contain only plants, while biomes also include animals.

Which of the following is an example of a primary producer?

• A) Lion

• B) Algae

• C) Eagle

• D) Wolf

What is photosynthesis?

• A) The process of producing carbohydrates using light energy.

• B) The process that uses chemical energy to produce carbohydrates.

• C) The process of breaking down chemicals into energy.

• D) The process of converting nitrogen into usable forms.

Which organism is an omnivore?

• A) Grasshopper

• B) Shark

• C) Bear

• D) Eagle

In a food web, what is the source of energy for primary producers?

• A) Decomposers

• B) The Sun

• C) Carnivores

• D) Herbivores

What are the organisms called that use light energy to produce food?

• A) Primary consumers

• B) Secondary consumers

• C) Tertiary consumers

• D) Autotrophs

What could happen to an ecosystem if a keystone species is removed?

• The ecosystem will become more stable.

• The ecosystem will not be affected.

• The ecosystem may experience a loss of biodiversity and stability.

• The ecosystem will increase its energy flow.

Which of the following is a pioneer species in primary succession?

• Grass

• Lichens

• Shrubs

• Trees

Explain the importance of balance in an ecosystem. Use a minimum of three sentences.

Describe how energy flows through an ecosystem, starting with the primary producers.