LS.7 & LS. 8 Population Interactions

Lions usually live in prides made up of a few adult females, an adult male, and some younger lions. The females hunt together, and the kill is shared with the pride. The lions’ method of hunting best illustrates—

• competition

• territoriality

• cooperation

• parasitism

Which of these is most likely the result of weasels and foxes depending on the same food source?

• The populations will compete with each other.

• One of the populations will become herbivores.

• Birthrates for both populations will increase.

• New species of prey will evolve in the area.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Individual members of an ant colony working together to meet the needs of all members of the colony is referred to as —

• parasitism

• cooperation

• competition

• territorialism

If there is a large lion population in an ecosystem and a limited amount of food, what will occur between the members of the lion population?

• Parasitism

• Competition for food

• Commensalism

• Competition for water

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Although the North American Bear is typically a solitary animal, they sometimes gather at streams or rivers. What causes the bears to gather?

• The stream is a meeting place for mating bears

• The need for social interaction between each adult bear

• The excessive amount of oxygen in the air created by the stream

• The abundance of prey available in the stream

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Red foxes urinate around the opening of their den —

• to communicate their established territory to other red foxes

• to lure small rodents to the area for prey

• to clear the opening of their dens by killing plant life

• to attract other red foxes for mating

Which of the following represents a population?

• All of the animals in the forest

• All of the grey squirrels in a forest

• All of the plants in the forest

• All of the abiotic factors in the forest

Tags

NGSS.MS-LS4-4

One reason birds sing and deer rub their antlers on trees is to —

• find more food

• establish a territory

• improve their habitat

• frighten their prey

Which of the organisms in a forest ecosystem is an example of a producer?

• Black bears

• Bacteria

• Oak trees

• Squirrels

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A tapeworm lives in human intestines, absorbing the nutrients that would normally be absorbed by the person. This eventually causes the person health problems. The relationship between the tapeworm and the human is —

• consumer/producer

• parasite/host

• predator/prey

• herbivore/omnivore

Tags

NGSS.MS-LS2-2