Unit One Review

Which level of biological organization includes all living and nonliving components in an area?

• Population

• Community

• Ecosystem

• Organism

What do multiple populations living together in one area form?

• Ecosystem

• Biosphere

• Community

• Habitat

Which of the following is the largest level of biological organization?

• Biosphere

• Community

• Ecosystem

• Population

What is a biotic factor in an ecosystem?

• Water

• Temperature

• Plants

• Sunlight

Which of these is an example of a population?

• A) A herd of deer in a forest

• B) All the animals in a rainforest

• C) An oak tree

• D) A pond and the organisms living in it

Which statement about energy in an ecosystem is correct?

• A) Energy is created by producers.

• B) Energy cycles through the ecosystem.

• C) Energy flows in one direction and is lost as heat.

• D) Energy is never lost.

What percentage of energy is transferred from one trophic level to the next?

• 50%

• 25%

Which law states that energy cannot be created or destroyed, only transferred?

• Law of Conservation of Mass

• First Law of Thermodynamics

• Second Law of Thermodynamics

• Law of Conservation of Energy

What happens to energy as it moves up a food chain?

• It increases.

• It stays the same.

• It decreases due to heat loss.

• It is recycled.

Which organisms convert sunlight into chemical energy?

• Primary consumers

• Decomposers

• Producers

• Secondary consumers