NGSS.MS-LS2-4

Field mice are the primary food source for horned owls in an area. Due to a drought, many field mice left the area. Which result would this drought most likely have on the horned owls?

• The horned owl population will consume more field mice.
• Horned owls will follow the field mice to a different area.
• The horned owl population will increase in the area.
• Horned owls will change to a plant-based diet.

Tags

NGSS.MS-LS2-4

When an ecosystem is affected by loss of shelter, what happens to the populations in that ecosystem?

• They can decrease or die out
• They are usually not affected
• They can readily adapt to the changes
• The populations increase

Tags

NGSS.MS-LS2-4

Which is not an impact to the ecosystem after a drought?

• Water is scarce and causes organisms to find new sources of water elsewhere.
• Floods will wipe out all the vegetation
• Herbivores will have to leave and find food elsewhere

Tags

NGSS.MS-LS2-4

What might happen if you remove a primary consumer from the ecosystem?

• There would be more food for secondary consumers.
• The number of primary consumers would increase.
• The number of plants would increase.
• The number of secondary consumers would increase.

Tags

NGSS.MS-LS2-4

Examine the diagram of a food web.

A small population of eagles is introduced in the food web. The eagles feed on mice and reproduce at high rates. What is the most likely consequence of the introduction of eagles in the food web?

• A. The eagles will coexist with the hawks.

• B. The hawks will prey on grasshoppers.

• C. The eagles will compete with the hawks.

• D. The hawks will establish a mutualistic relationship with mice.

Tags

NGSS.MS-LS2-4

What was one of the negative results of the trees being cut down.

• Nothing happened because people wanted the product.

• The man made money.

• Because all of the trees were cut down the animals in the forest had to leave.

Tags

NGSS.MS-LS2-4

What is most likely to happen to moth populations in the picture shown?

• Light moths--hunted easily, dark moths--population increase

• Dark moths--hunted easily, dark moths--population increase

• Light moths--hunted easily, light moths--population increase

• Lights moths will change their color to match dark moths.

Tags

NGSS.MS-LS2-4

A flood will have a greater effect on a habitat than a heavy rainfall event because a flood –

• is followed by strong winds that greatly affect a habitat.

• strikes more quickly, not allowing organisms to migrate.

• brings salt and other substances that harm plants.

• happens more often and lasts much longer.

Tags

NGSS.MS-LS2-4

Mud and sand are constantly moving, so very few algae and plants can establish in which biome?

• Taiga

• Coral Reef

• Worms

• Beach

Tags

NGSS.MS-LS2-4

Which of the following could NOT prevent a population from growing?

• Food

• Disease

• Space

• Migration

Tags

NGSS.MS-LS2-4