Ecology Review

In the relationship between an owl and a field mouse, the owl is _____.

• a prey

• a producer

• the predator

• a herbivore

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

A population of deer has declined in recent years. What is a reasonable hypothesis for this decrease?

• The primary predator population has decreased.

• The availability of food resources has decreased.

• Abnormal weather conditions have increased water levels in rivers.

• Migration of similar herbivores into the area has reduced competition.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is a biotic factor in an ecosystem?

• Rocks

• Rainfall

• Oak trees

• Wind speed

A wildfire spreads through a forest, leaving behind charred trees and ashes. Over time, plants begin to regrow in the area. Which organisms play the most crucial role in decomposing the remaining organic material?

• Insects

• Fungi and bacteria

• Birds

• Mammals

Tags

NGSS.MS-LS2-3

Animals that primarily consume plants are referred to as _____.

• Carnivores

• Herbivores

• Omnivores

• Decomposers

What does a food web illustrate?

• The size of various populations

• Flow of energy and matter between organisms

• The impact of abiotic factors on ecosystems

• Life cycle stages of different organisms

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NGSS.MS-LS2-3

What is the primary reason energy diminishes as it moves up the energy pyramid?

• Larger organisms at the top require more energy

• Some energy is converted into biomass at each level

• Most energy is lost as heat during energy transfer

• Decomposers consume energy at the highest level

Tags

NGSS.MS-LS2-3

A population of deer has declined in recent years. What is a reasonable hypothesis for this decrease?

• The primary predator population has decreased.

• The availability of food resources has decreased.

• Abnormal weather conditions have increased water levels in rivers.

• Migration of similar herbivores into the area has reduced competition.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Deep-sea organisms use methane from hydrothermal vents to produce food. This process is an example of _____.

• Chemosynthesis

• Photosynthesis

• Parasitism

• Symbiosis

Which of the following is an example of an invasive species?

• A native bird species thriving in its natural habitat

• A tropical fish species introduced into a local river and outcompeting native fish

• A plant that only grows in the Arctic tundra

• A predator population naturally decreasing due to habitat loss

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4