Ecological relationships

Multiple Choice

Which of the following is an example of a biotic component in an ecosystem?

• A fallen tree

• Sunlight

• Water

• Rocks

Multiple Choice

Which of the following best describes a biome?

• A group of individuals of the same species

• A large area with similar climate conditions that determine plant and animal species

• All living organisms in an area

• Where all life exists on Earth

Multiple Choice

If prey populations increases, then predator populations will ___

• increase

• decrease

• stay the same

Multiple Choice

What is the main effect of competition within a species, according to the graphs?

• Unlimited population growth

• Maximum population size with limited resources

• Population extinction

• No effect on population size

Multiple Choice

Which of the following is NOT a type of resource partitioning described in the slide?

• Temporal

• Spatial

• Morphological

• Behavioral

Multiple Choice

Which of the following best describes mutualism?

• Both species benefit

• One species benefits, the other is harmed

• One species benefits, the other is unaffected

• Both species are harmed

Multiple Select

Select all correct pairs of symbiotic relationships and their examples from the table:

• Dog-Flea: Parasitism

• Fungus-Algae: Mutualism

• Shark-Remora: Commensalism

• Human-Tapeworm: Mutualism

Multiple Choice

What is the difference between predation and parasitism?

• In predation, an organism kills another organism right away but in parasitism, it does not die immediately

• In parasitism only, the organism that is harmed dies immediately

• Both cause one organism to die immediately

Multiple Choice

What is the main difference between biotic and abiotic components in an ecosystem?

• Biotic components are living or once-living, while abiotic components are nonliving.

• Biotic components are nonliving, while abiotic components are living.

• Biotic components are always plants, while abiotic components are always animals.

• Biotic components are found only in water, while abiotic components are found only on land.