Q. What is an ecosystem?

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1.4.2 - 1.4.6 Ecology FMQuiz Homework Solution
Q. What is an ecosystem?
A. A community of living organisms interacting with
one another and their environment
Q. What is a food web?
A. Interconnected food chains or more than one
species at each trophic level
Q. Explain the term biosphere.
A. The part of the planet where life occurs
Q. True or False. Herbivores normally live long
lives.
A. False
Q. What is a habitat?
A. The place where an organism lives
Q. Organisms capable of making their own food are
known as …
A. Producers
Q. In ecological studies what are abiotic factors.
A. Non-living features that influence the
distribution of organisms
Q. Where in a food chain are primary producers
found?
A. First (level)
Q. Explain the term edaphic.
A. Relating to the soil
Q. Why are most food chains short i.e. only consist
of a few trophic levels?
A. Large energy loss from one level to next or small
energy transfer
Q. True or False. The term abiotic refers to the
living factors in an ecosystem.
A. FALSE
Q. Give an example of an abiotic factor that
influences the distribution of a named plant in an
ecosystem.
A. e.g. Climatic, edaphic, etc.
Q. What term is used to describe organisms that
feed on primary producers?
A. Primary consumer(s) or herbivore(s)
Q. Give an example of an edaphic factor.
A. Particle size or Soil type or pH or Air content or
Water content or Mineral content or Humus
content
Q. What deduction may be made if the organisms
at the start of the chain are less numerous than
those that feed upon them?
A. Producers are large or primary consumers are
parasites
Q. In ecological studies what are biotic factors.
A. Living features that influence the distribution of
organisms
Q. Can a parasite be the first member of a food
chain?
A. No. They are not producers
Q. What is meant by a pyramid of numbers?
A. The numbers of organisms at each trophic level
Q. Energy enters food chains in the form of light. In
which form do you think most energy is lost from
food chains?
A. Heat
Q. Give an example of a biotic factor that
influences the distribution of a named animal.
A. Predator (fox) influences distribution of rabbits
Q. What term is used by ecologists to describe the
organisms that form the base of a pyramid of
numbers?
A. Producers or autotrophs
Q. In ecology what is meant by a trophic level?
A. The position of an organism in a food chain
Q. Name the process that takes place in plants in
which the sun’s energy is converted to a usable
form.
A. Photosynthesis
Q. What is the source of energy for the earth’s
ecosystems?
A. The sun
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