APES Unit 2 Review

Front

The variety of ecosystems within a given region is

Back

ecosystem diversity

Answer explanation

Ecosystem diversity refers to the variety of ecosystems within a region. It encompasses different habitats, communities, and ecological processes, making it the correct choice for describing the variety of ecosystems.

Front

The number of species in within a given area measures

Back

species richness

Answer explanation

The number of species in a given area specifically measures species richness, which refers to the count of different species present, distinguishing it from other diversity types like ecosystem or genetic diversity.

Front

The variety of species within a given ecosystem

Back

species diversity

Answer explanation

The variety of species within a given ecosystem is referred to as species diversity. It encompasses both the number of different species and their relative abundance, distinguishing it from other types of diversity.

Tags

NGSS.MS-LS2-5

Front

A change in the genetic composition of a population over time as a result of the environment determining which individuals are most likely to survive and reproduce is called

Back

natural selection

Answer explanation

Natural selection is the process where environmental factors influence which individuals survive and reproduce, leading to changes in the genetic composition of a population over time.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Front

The range of abiotic and biotic conditions in which an organism actually lives

Back

realized niche

Answer explanation

The realized niche refers to the actual conditions and resources an organism uses in its environment, considering both abiotic and biotic factors. This contrasts with the fundamental niche, which is the potential range without competition.

Tags

NGSS.MS-LS2-1

Front

A species that can only live in a certain habitat, or one that feeds on a small range of species

Back

specialist

Answer explanation

A specialist species is one that can only thrive in specific habitats or relies on a narrow range of food sources, making it distinct from generalists that can adapt to various environments and diets.

Front

A species that can live under a wide range of abiotic or biotic conditions

Back

generalist

Answer explanation

A generalist species can thrive in a variety of environments and conditions, unlike a specialist that has specific habitat or dietary needs. This adaptability allows generalists to survive under diverse abiotic and biotic factors.

Front

An inherited trait that increases an organism's ability to survive and reproduce

Back

adaptation

Answer explanation

An adaptation is an inherited trait that enhances an organism's survival and reproductive success in its environment, making it the correct choice for the given definition.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

Two savanna communities both contain 15 plant species. In community A, each of the 15 species is represented by 20 individuals. In community B, 10 of the species are each represented by 12 individuals; the remaining 5 species are each represented by 3 individuals. Which statement best describes the two communities?

Back

Community A has higher species evenness

Answer explanation

Community A has higher species evenness because all 15 species are equally represented by 20 individuals each, while in Community B, the distribution is uneven with some species having only 3 individuals.

Front

Adaptation

Back

A trait that improves an individual's fitness

Answer explanation

The best definition of an adaptation is 'a trait that improves an individual's fitness.' This means that adaptations enhance an organism's ability to survive and reproduce in its environment.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4