What is an ecosystem?

What is an ecosystem?

• A) A community of living organisms and their physical environment interacting as a system.

• B) A single species living in its natural habitat.

• C) A collection of plants only.

• D) A geographic area with similar weather patterns.

What does the term "biotic" refer to in an ecosystem?

• Everything that is not alive, such as rocks and water.

• All living things or things that were once alive.

• Only animals and humans.

• Only plant species.

Which of the following is an example of an abiotic component of an ecosystem?

• Plants

• Animals

• Soil

• Dead organic material

What is predation in ecological terms?

• When one species provides shelter to another species

• When one species consumes another species for energy

• When two species compete for the same resources

• When one species helps another species reproduce

How does predation affect the populations involved?

• Increases population of both predator and prey

• Decreases population of predator and increases population of prey

• Increases population of predator and decreases population of prey

• No impact on either population

What can competition for limited resources between organisms involve?

• Only direct confrontation within the same species

• Only indirect interactions across different species

• Both direct and indirect interactions within the same species or across different species

• Only sharing resources equally among all organisms

How does competition over the same limited resources typically affect each population involved?

• It has no significant impact on the populations

• It leads to increased cooperation between the populations

• It can lead to a decrease in the population size of one or both groups

• It ensures equal distribution of resources among all organisms

What is mutualism in biological terms?

• A) A relationship where one species benefits and the other is harmed

• B) A relationship where both species benefit

• C) A relationship where one species benefits without affecting the other

• D) A relationship where both species are harmed

Which of the following best describes the effect of mutualism on the populations involved?

• A) Decreases the population size of both species

• B) Increases the survival and reproduction of both species

• C) Has no significant effect on the populations

• D) Increases the survival of one species while harming the other

What is commensalism in ecological terms?

• A relationship where both species benefit.

• A relationship where one species benefits and the other is unaffected.

• A relationship where one species is harmed and the other benefits.

• A relationship where both species are harmed.