Populations Graphs

Scientists measured the spine size of a population of cactuses found in an area in 1970. They measured the spine size of the cactus population again in 2015. Which of the statements below best describes the difference in the cactuses at the two time points?

• The cactuses in 1970 had smaller spines than the cactuses in 2015.

• The cactuses in 1970 had larger spines than the cactuses in 2015.

• There were more cactuses in 1970 than there were in 2015.

• There was more variation in spine size in 1970 than there was in 2015.

Scientists measured the spot size of all the guppies (small fish) that lived in a river 40 years ago. They measured the spot size of the guppy population again last year. When was there more variation in the spot size of guppies in the river?

• These bar graphs do not show the amount of variation in the population.

• There was the same amount of variation in spot size 40 years ago and last year.

• There was more variation 40 years ago.

• There was more variation last year.

Tags

NGSS.MS-LS4-4

What may explain the change in the deer population at year 6?

• The environment may have changed color so that the deer blended better with its surroundings

• The environment may have changed color so that the deer were easier to be seen

• Hunters in the area began to hunt other animals instead of deer

• The deer began to reproduce more

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Growth pattern in which the individuals in a population reproduce at a constant rate; graphs as a J shaped curve

• a. logistic growth

• b. age structure diagram

• c. carrying capacity

• d. exponential growth

Graphs that show that the likelihood of death varies with age

• a. biotic potential

• b. survivorship

• c. carrying capacity

• d. invasive species

Growth pattern in which a population's growth rate slows or stops following a period of exponential growth. Creates an S shaped curve

• Logistic Growth

• Exponential Growth

• Jolistic Growth

• Go and Stop Growth

Tags

NGSS.MS-LS1-5

Define Age Structure Diagram/Population Pyramid

• Growth pattern in which the individuals in a population reproduce at a constant rate; graphs as a J shaped curve

• graph showing the relative numbers of organisms of each age in a population divided by males and females

• Growth pattern in which a population's growth rate slows or stops following a period of exponential growth; graphs as a s shaped curve

• limiting factor that affects all populations in similar ways, regardless of population size

Tags

NGSS.HS-LS2-6

Which type of graph is typically used to represent the growth of a population that initially grows rapidly and then levels off as it reaches carrying capacity?

• Linear graph

• Exponential graph

• Logistic graph

• Bar graph

Tags

NGSS.HS-LS2-1

In a population graph, what does the carrying capacity represent?

• The maximum number of individuals an environment can support

• The initial population size

• The rate of population growth

• The age distribution of the population

What does a survivorship curve graphically represent in population studies?

• The growth rate of a population

• The birth rate of a population

• The likelihood of survival at different ages

• The carrying capacity of an environment