Quiz on Ecology

Which of the following is an abiotic factor that affects populations?

• Plants

• Animals

• Rocks

• Bacteria

What is the smallest level of ecological organization?

• Biosphere

• Ecosystem

• Individual

• Community

What is the lowest level of organization in biological systems?

• Population

• Community

• Organism

• Ecosystem

What is a biological community?

• A group of interacting populations in the same geographic area

• A single species living in an area

• The abiotic factors in an environment

• The entire planet

What are limiting factors in population growth?

• Factors that increase population growth

• Factors that limit population growth

• Factors that have no effect on population growth

• Factors that only affect animal populations

What does carrying capacity refer to?

• The maximum number of organisms an environment can carry

• The minimum number of organisms an environment can carry

• The average number of organisms an environment can carry

• The number of organisms that can migrate to an environment

Which of the following is an example of a heterotroph?

• Algae

• Plants

• Animals

• Phytoplankton

Which of the following organisms is considered an autotroph?

• Fungi

• Some Bacteria

• Most Protozoa

• Animals

What are detritivores?

• Organisms that eat fragments of dead matter and return nutrients to the ecosystem

• Organisms that produce their own food through photosynthesis

• Organisms that hunt and consume other animals

• Organisms that live in symbiotic relationships with plants

How many organisms does the big fish eat in the given food web?

• 1

• 2

• 3

• 4