Unit 4 Exam Review

Front

What is a niche in an ecosystem?

Back

A niche is the role or function of an organism or species within an ecosystem, including its habitat, resource use, and interactions with other organisms.

Front

What is the difference between a habitat and a niche?

Back

A habitat is the physical environment where an organism lives, while a niche is the specific role or function that the organism plays in that environment.

Front

Define commensalism.

Back

Commensalism is a type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed.

Front

What is parasitism?

Back

Parasitism is a relationship between two organisms where one organism (the parasite) benefits at the expense of the other (the host), often harming it.

Front

Explain the concept of predation.

Back

Predation is an interaction where one organism (the predator) hunts and eats another organism (the prey).

Front

What does it mean for species to occupy different niches?

Back

When species occupy different niches, they utilize different resources or roles in the ecosystem, reducing competition between them.

Front

What is the significance of predator-prey relationships in ecosystems?

Back

Predator-prey relationships help regulate population sizes and maintain balance within ecosystems.

Tags

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Front

Define mutualism.

Back

Mutualism is a symbiotic relationship where both organisms benefit from the interaction.

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Front

What is the role of epiphytes in an ecosystem?

Back

Epiphytes are plants that grow on other plants (like trees) for support, gaining access to sunlight without harming the host.

Tags

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Front

How do decomposers contribute to an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the soil and supporting plant growth.

Tags

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