Ecological Interactions and Energy Flow

What is the correct order of the levels of ecological organization from smallest to largest?

• Ecosystem, Community, Population, Organism

• Organism, Population, Community, Ecosystem

• Population, Organism, Ecosystem, Community

• Community, Ecosystem, Organism, Population

Which of the following interactions is an example of commensalism?

• A tick feeding on a dog

• A bird building a nest in a tree

• Bees pollinating flowers

• Wolves hunting in packs

Tags

NGSS.MS-LS2-2

In a parasitic relationship, which organism benefits?

• Host

• Parasite

• Both organisms

• Neither organism

Which of the following is an example of mutualism?

• A flea on a dog

• A remora fish attaching to a shark

• A bee pollinating a flower

• A lion hunting a zebra

What does an energy pyramid represent in an ecosystem?

• The number of organisms at each trophic level

• The flow of energy through different trophic levels

• The biomass of organisms at each trophic level

• The diversity of species in an ecosystem

Tags

NGSS.MS-LS2-3

What is biomagnification?

• The increase in biomass at higher trophic levels

• The increase in concentration of toxins in organisms at higher trophic levels

• The increase in energy transfer efficiency at higher trophic levels

• The increase in species diversity at higher trophic levels

Tags

NGSS.MS-LS2-4

Which of the following is NOT a level of ecological organization?

• Biosphere

• Biome

• Habitat

• Community

In an energy pyramid, which level typically has the most energy available?

• Tertiary consumers

• Secondary consumers

• Primary consumers

• Producers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

In an energy pyramid, which level typically has the least energy available?

• Tertiary consumers

• Secondary consumers

• Primary consumers

• Producers

Tags

NGSS.MS-LS2-3

Which of the following is an example of a primary consumer in a food chain?

• Grass

• Rabbit

• Snake

• Hawk

Tags

NGSS.MS-LS2-3