Population Graphs

In this diagram, which insect has the favorable trait, or is well adapted to in its environment?

• light insect

• dark insect

• green insect

• purple insect

Tags

NGSS.MS-LS4-4

Harbor seals live in northern oceans and a have layer of blubber (fat) that keeps them warm. Seals can have blubber of different thicknesses. Seals with thicker blubber are more likely to stay warm and survive in cold ocean waters. But, in warm ocean waters, thicker blubber can make the seals overheat and die. The diagrams below show three possible seal populations. If their environment changes to have warm water, which of the following seal populations will most likely survive?

• Populations 1 and 2 will most likely survive.

• Populations 2 and 3 will most likely survive.

• Only Population 2 will survive because it is the only population with variation.

• All the populations will survive because the seals will change the thickness of their blubber if they need to.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

NGSS.MS-LS4-4

The population of deer in a certain area is monitored over a period of six years. The data is represented in the graph provided. Which of the following is the most likely explanation for the change in population in 2009?

• Wolves, which prey on deer, were being hunted more than usual.

• Rainfall in the previous spring was higher than the yearly average.

• Humans introduced grazing animals that feed on the same plants as the deer.

• More insects that pollinate flowering plants move into the habitat.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is the independent variable in this graph?

• Tadpoles

• Year

• Frogs

• Number of tadpoles in the pond

Tags

NGSS.MS-LS2-1

How many people visited the park in 1997?

• 20

• 40

• 60

• 50

• 35

Tags

NGSS.MS-PS3-1

Between which two times was the greatest increase in number of shoppers?

• 12pm and 1pm

• 1pm and 2pm

• 2pm and 3pm

• 10am and 11am

How many more people like purple than red?

• 3

• 5

• 7

• 9

What was the bear population in 2001?

• 40

• 45

• 50

• 55

Tags

NGSS.MS-LS2-1

Which of the following best describes a population graph?

• A graphical representation of the number of individuals in a population over time

• A chart showing the genetic variation within a population

• A diagram illustrating the food chain in an ecosystem

• A map indicating the geographical distribution of a species

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

• The maximum number of individuals an environment can support

• The initial number of individuals in a population

• The average growth rate of a population

• The total number of births in a population

Tags

NGSS.MS-LS2-4