How Population Grows

This is the largest number of individuals of a population that the environment can support...

• carrying capacity

• population crash

• lag phase

• mutualism

Tags

NGSS.MS-LS2-1

Which statement best describes the growth of the dandelions?

• Linear growth occurs because the field provides abundant but limited resources during the summer.

• Logistic growth occurs because the field provides unlimited resources during the summer.

• Exponential growth occurs because the field provides unlimited resources during the summer.

• Fluctuating growth patterns occur because the population reached the carrying capacity of the field during the summer.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Frank counts 56 maple trees living on a 20-acre tract of land, and the data allows him to calculate the_________________ of the maple trees on the land.

Frank counts 56 maple trees living on a 20-acre tract of land, and the data allows him to calculate the population density of the maple trees on the land. He observes that most of the maple trees grow closely together in groups of 6 to 8 trees, which describes the__________________.

Frank counts 56 maple trees living on a 20-acre tract of land, and the data allows him to calculate the population density of the maple trees on the land. He observes that most of the maple trees grow closely together in groups of 6 to 8 trees, which describes the population distribution. The __________________________of the maple trees shows the percentages of trees

Marita is analyzing the population of various songbirds in her neighborhood. She estimates how the population is increasing by_____________ and decreasing by ______________as different birds enter and leave the area.

• immigration and emigration

• exponential growth and logistic growth

• carrying capacity and immigration

Tags

NGSS.MS-LS2-4

Marita thinks that the blue jay population increased by________________because it doubled over a short time, but then it followed a pattern of_______________________when the population approached the_____________________

• exponential growth, logistic growth, carrying capacity

• carrying capacity, exponential growth, logistic growth

• logistic growth, exponential growth, carrying capacity

Vernon is studying the population of deer in a tract of forest. He gathers the following data.

Birth rate: ~50 deer/year

Death rate: ~70 deer/year

Which additional observation would support the conclusion that the deer population is NOT changing size from year to year, meaning that the net population change is 0?

• About 20 deer per year immigrate to the tract of forest.

• About 20 deer per year emigrate from the tract of forest.

• The average life span of a member of the deer population is 20 years.

• If a deer survives its first year of life, its average life span is 20 years.

Tags

NGSS.MS-LS2-4

Which of the following best describes the concept of carrying capacity in an ecosystem?

• The maximum number of individuals an environment can support sustainably

• The rate at which a population increases

• The number of species in a given area

• The genetic diversity within a population

A population of rabbits in a forest increases rapidly over a short period. This type of growth is known as:

• Logistic growth

• Exponential growth

• Linear growth

• Cyclic growth