Practice Questions On Ecosystem! Quiz
.
- 1.What is the correct order of taxa from top to bottom?
- A.
Kingdom, Class, Phylum, Family, Order, Genus, Species
- B.
Kingdom, Family, Class, Phylum, Genus, Species
- C.
Kingdom, Phylum, Order, Class, Family, Genus, Species
- D.
Kingdom, Phylum, Class, Order, Family, Genus, Species
- 2.What is the initial energy source for almost all communities
- A.
Light
- B.
Photosynthesis
- C.
Heat
- D.
Water
- 3.A trophic level is a position on the food chain representing the type of substance an organisms eats.
- A.
True
- B.
False
- 4.An autotroph is a(n)
- A.
Organisms that secretes enzymes onto dead or decaying organic matter which causes decompostion then absorbs the products.
- B.
Organism that synthesises its own carbon from inorganic materials.
- C.
Organism that synthesis its own carbon from organic materials
- D.
Organism that acquires its carbon from organic sources
- 5.Whats the correct formula for population size given that B = births, I = immigration, D = deaths and E = emigration
- A.
( B + D ) - ( I + E )
- B.
( B - I ) + ( D - E )
- C.
( E - D ) + ( B - E )
- D.
( B - D ) + ( I - E )
- 6.
- A.
A larger rate of polar bears swimming north, rise of temperature in arctic regions, less coniferous forests, higher CO2 levels in atmosphere
- B.
Everyone will die and drown because the sea levels will rise
- C.
Polar ice-caps will melt, arctic species will become extinct, CO2 will increase in the atmosphere, permafrost turning into tundra
- D.
Loss of ice habitat, increased success of pest species, tundra turning to wetland, coniferous forests will expand where tundra previously existed, expansion of range of habitats available to temperate species
- 7.Populations tend to produce more offspring than the environment can support
- A.
True
- B.
False
- 8.
- A.
Evolution is the process by which favourable characteristics are selected over time by nature.
- B.
Evolution is the process by which living organisms are formed, by gradual change, from previous organisms.
- C.
Evolution is Darwin's theory concerning the links between organisms through a series of human induced change.
- D.
Evolution is the process by which organisms have developed over time in order to survive.
- 9.A _____________ is a group of related organisms having common characteristics, capable of breeding and producing fertile off-spring.
- 10.______________ is the study of relationships between living organisms and their environment
- 11.A _______________ is the interaction of different populations within a specific area.
- 12.A _________ is a group of individual organisms of the same species living within a specific area.
- 13.Explain how natural selection leads to evolution and explain an example of evolution in response to a human induce change.
- 14.Explain how energy and nutrients enter, move through, and exit a food chain in an ecosystem.
- 15.Distinguish between a consumer, detritivore and sapritroph.
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