Biology 46 Ecosystems MCQ

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Photo depicts Earth from space.
This NASA image is a composite of several satellite-based views of Earth. To make the whole-Earth image, NASA scientists combine observations of different parts of the planet. (credit: NASA/GSFC/NOAA/USGS)

Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.

Unit 8. Ecology

Chapter 46: Ecosystems MCQ Multiple Choices Questions Quiz Test Bank

46.1 Ecology of Ecosystems

46.2 Energy Flow through Ecosystems

46.3 Biogeochemical Cycles

Quiz PDF eBook: 
Biology 46 Ecosystems MCQ
Download Biology 46 Ecosystems Quiz PDF eBook
17 Pages
2015
English US
Educational Materials



Sample Questions from the Biology 46 Ecosystems MCQ Quiz

Question: Organisms that can make their own food using inorganic molecules are called:

Choices:

autotrophs

heterotrophs

photoautotrophs

chemoautotrophs

Question: The ability of an ecosystem to return to its equilibrium state after an environmental disturbance is called ________.

Choices:

resistance

restoration

reformation

resilience

Question: What term describes the use of mathematical equations in the modeling of linear aspects of ecosystems?

Choices:

analytical modeling

simulation modeling

conceptual modeling

individual-based modeling

Question: The weight of living organisms in an ecosystem at a particular point in time is called:

Choices:

energy

production

entropy

biomass

Question: The position of an organism along a food chain is known as its ________.

Choices:

locus

location

trophic level

microcosm

Question: Which term describes the process whereby toxic substances increase along trophic levels of an ecosystem?

Choices:

biomassification

biomagnification

bioentropy

heterotrophy

Question: A re-created ecosystem in a laboratory environment is known as a ________.

Choices:

mesocosm

simulation

microcosm

reproduction

Question: What law of chemistry determines how much energy can be transferred when it is converted from one form to another?

Choices:

the first law of thermodynamics

the second law of thermodynamics

the conservation of matter

the conservation of energy

Question: The primary producers in an ocean grazing food web are usually ________.

Choices:

plants

animals

fungi

phytoplankton

Question: In the English Channel ecosystem, the number of primary producers is smaller than the number of primary consumers because________.

Choices:

the apex consumers have a low turnover rate

the primary producers have a low turnover rate

the primary producers have a high turnover rate

the primary consumers have a high turnover rate

Question: Decomposers are associated with which class of food web?

Choices:

grazing

detrital

inverted

aquatic

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Source:  OpenStax College. Download for free at http://cnx.org/content/col16468/latest/
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