Ecology Unit

Which of the following descriptions about the organization of an ecosystem is correct?

• communities make up species, which make up populations

• populations make up species, which make up communities

• species make up communities, which make up populations

• species are grouped in populations, which make up communities

An organism that uses energy to produce its own food supply from inorganic compounds is called a(n)

• heterotroph

• consumer

• detritivore

• autotroph

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NGSS.MS-LS2-3

The total amount of living tissue within a given trophic level is called the

• organic mass

• trophic mass

• energy mass

• biomass

The branch of biology dealing with interactions among organisms and between organisms and their environment is called

• economy

• modeling

• recycling

• ecology

Tags

NGSS.MS-LS2-2

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Blackspot fungus does not grow on roses when there is a large amount of sulfur dioxide in the atmosphere. This fungus serves as a _____

• secondary messenger

• bioindicator

• keystone species

• eco-service

As part of the biosphere, humans only account for ____ % of the Earth's biomass:

• 1%

• 0.01%

• 7%

• 12%

Which is a biotic factor that affects the size of a population in a specific ecosystem?

• average temperature

• type of soil

• amount of oxygen

• kinds of predators

Tags

NGSS.MS-LS2-1

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Different species can share the same habitat, but competition among them is reduced if they

• reproduce at different times

• eat less

• increase their populations

• occupy different niches

The symbiotic relationship between a flower that gets its pollen spread and the insect that feeds on the nectar is an example of

• mutualism

• commensalism

• parasitism

• predation

Tags

NGSS.MS-LS2-2

An interaction in which one organism captures and feeds on another organism is called

• competition

• symbiosis

• mutualism

• predation