Practice Final Exam

What do you call the population size represented by the dashed-Line

• Carrying Capacity

• Limiting Factor

• Ecosystem

• Death Rate

Answer explanation

The dashed line represents the carrying capacity, which is the maximum population size that an environment can sustain indefinitely. It indicates the balance between resources and population growth.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

When organisms move into and join a new population

• Immigration

• Birth Rate

• Death Rate

• Emigration

Answer explanation

The correct answer is Immigration, which refers to the process of organisms moving into and joining a new population. This is distinct from emigration, which is leaving a population.

When organisms leave a population and move away

• Emigration

• Immigration

• Birth Rate

• Death Rate

Answer explanation

The correct answer is Emigration, which refers to the process of organisms leaving a population and moving away. In contrast, Immigration is when organisms enter a population.

The number of organisms in a population that an ecosystem can support

• Carrying Capacity

• Limiting Factor

• Birth Rate

• Ecology

Answer explanation

The correct answer is 'Carrying Capacity', which refers to the maximum number of organisms an ecosystem can sustainably support. Other options like 'Limiting Factor' and 'Birth Rate' do not define this concept.

Tags

NGSS.MS-LS2-4

2 factors which decrease population size

• Birth Rate, Immigration

• Death Rate, Immigration

• Birth Rate, Emigration

• Death Rate, Emigration

Answer explanation

Death rate increases mortality, reducing population size, while emigration involves people leaving a region, also decreasing the population. In contrast, birth rate and immigration would increase population size.

Tags

NGSS.MS-LS2-4

When population is above the carrying capacity in the future you would expect...

• Limited Resources and High Competition

• Unlimited Resources and Low Competition

Answer explanation

When the population exceeds the carrying capacity, resources become limited, leading to increased competition among individuals for those scarce resources. Thus, the correct answer is Limited Resources and High Competition.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The resource which limits the number of organisms in the population

• Limiting Factor

• Carrying Capacity

• Death Rate

• Exponential Growth

Answer explanation

A Limiting Factor is a resource that restricts the growth of a population by limiting the number of organisms that can survive. This is why it is the correct answer, as it directly influences population size.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The resource which limits the number of organisms in the population

• Limiting Factor

• Carrying Capacity

• Death Rate

• Exponential Growth

Answer explanation

A Limiting Factor is a resource that restricts the growth of a population by limiting the number of organisms that can survive. This distinguishes it from Carrying Capacity, which refers to the maximum population size an environment can sustain.

Tags

NGSS.MS-LS2-1

Define genetic diversity

• variation of genes within a species or population in a given area

• variety of ecosystems in a given area

• system made up of all the living and nonliving things in a given area

• disturbance in the environment conditions that cause genetic changes to occur in organisms

Answer explanation

Genetic diversity refers to the variation of genes within a species or population in a given area. This diversity is crucial for the adaptability and survival of species, making the first answer choice the correct one.

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

Which kind of diversity allows organisms on earth to adapt to and survive many changing environmental conditions?

• genetic diversity

• species diversity

• functional diversity

• ecosystem diversity

Answer explanation

Genetic diversity allows for variations within a species, enabling organisms to adapt to changing environments. This adaptability is crucial for survival as it provides a greater chance of resilience against environmental shifts.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4