AP unit 1-3 quiz

What is the smallest unit of matter that retains the properties of an element?

• Molecule

• Atom

• Compound

• Proton

What term describes a species that plays a critical role in maintaining the structure of an ecosystem?

• Apex Predator

• Ecosystem Engineer

• Keystone Species

• Invasive Species

What is the term for two or more species using the same limited resources, leading to two organisms having to fight for resources?

• Mutualism

• Predation

• Parasitism

• Competition

The energy captured by producers minus the energy lost to respiration is known as:

• Gross Primary Productivity

• Net Primary Productivity

• Biomass

• Solar Efficiency

Which process involves the release of carbon dioxide back into the atmosphere from organisms?

• Photosynthesis

• Cellular Respiration

• Nitrogen Fixation

• Eutrophication

What is the function of a decomposer in an ecosystem?

• Capture energy from the sun

• Break down dead organisms and recycle nutrients

• Consume primary producers

• Create biomass

The law of thermodynamics that states energy cannot be created or destroyed is:

• The First Law

• The Second Law

• The Law of Conservation

• The Law of Energy Efficiency

The process where organisms evolve to use resources differently, to reduce competition, is known as:

• Competitive Exclusion

• Resource Partitioning

• Symbiosis

• Parasitism

Which term describes a relationship where one species benefits and the other is neither helped nor harmed?

• Mutualism

• Parasitism

• Commensalism

• Predation

What type of succession occurs in an area that was previously uninhabited by living organisms?

• Primary Succession

• Secondary Succession

• Tertiary Succession

• Climax Community