Chapter 9 Lesson 2

Which situation is a description of a fish’s habitat?

• where it lives

• organisms it eats

• all other members of its species

Which is a description of a niche?

• the physical place where an organism lives

• the unique ways an organism lives in its habitat

• a relationship between one organism and another

symbiotic relationship in which one species benefits and another is harmed

• mutualism

• parasitism

• commensalism

symbiotic relationship in which two species in a community benefit each other

• mutualism

• parasitism

• commensalism

symbiotic relationship in which one species benefits and the other is not helped or harmed

• mutualism

• parasitism

• commensalism

how a population would grow under perfect conditions

• limiting factor

• carrying capacity

• biotic potential

something that can restrict the growth of a population

• limiting factor

• carrying capacity

• biotic potential

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the largest number of individuals of one species that an ecosystem can support over time

• limiting factor

• carrying capacity

• biotic potential

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How do images A and B compare?

• Image A shows a larger population size but not a larger population density.

• Image A shows a larger population size and a larger population density.

• Image B shows a larger population density but not a larger population size.

• Image B shows a larger population size and a larger population density.

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In general, what do limiting factors limit?

• the growth of populations

• the death rate in populations

• the ability of individuals to move around

• the likelihood that individuals will become sick

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