Keystone Review Basic 8 - Ecology

Which sequence best orders ecological categories from the one with the fewest number of individuals to the one with the greatest number of individuals?

• ecosystem, population, community, biome

• population, community, ecosystem, biome

• biome, population, community, ecosystem

• community, biome, population, ecosystem

Which set of ecological organization levels is most likely to contain the largest variety of species?

• multiple biomes in the biosphere

• multiple ecosystems in a biome

• multiple individuals in a population

• multiple populations in a community

Tags

NGSS.MS-LS2-5

Which factor most likely limits the number of levels an energy pyramid can have?

• biomass of the top-level organism

• predation by the top-level organisms

• energy loss between each level

• organisms being decomposed at each level

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The mass of living organisms in a given area or ecosystem at a given time

• Bioenergetics

• Decomposers

• Energy pyramid

• Biomass

Which statement best describes a relationship between a biotic and an abiotic part of this ecosystem?

• Rain falls and runoff fills the pond

• The trees use energy from the sun for photosynthesis

• The plants in the pond are eaten by the turtles and ducks

• Decomposers break down the dead tree

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which statement best distinguishes between biotic and abiotic factors?

• Biotic factors are alive

  Abiotic factors are dead

• Biotic factors are, or were alive

  Abiotic factors were never alive

• Biotic factors affect living organisms

  Abiotic factors affect non-living parts of an ecosystem

• Biotic factors are eukaryotes

  Abiotic factors are prokaryotes

Which food chain best describes how energy flows in an ecosystem that includes lizards?

• foxes → lizards → insects → plants

• plants → insects → lizards → foxes

• plants ← insects ← lizards ← foxes

• foxes ← lizards ← plants ← insects

Tags

NGSS.MS-LS2-3

If the amount of energy at the producer level receive 90,000 kilocalories (kcal) of energy from the sun, about how much energy would be available to secondary consumers in this ecosystem?

• 9,000,000 kcal

• 900 kcal

• 9,000 kcal

• 900,000 kcal

Tags

NGSS.MS-LS2-3

Identify the primary consumer in this community

• phytoplankton

• zooplankton

• small fish

• large fish

Tags

NGSS.MS-LS2-2

Determine the amount of energy that will end up as biomass in the large fish

• 60,000 kJ/m²

• 6,000 kJ/m²

• 600 kJ/m²

• 60 kJ/m²

Tags

NGSS.MS-LS2-3