Ecology 2: Question Preview (ID: 779)

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Only 10 percent of the energy stored in an organism can be passed on to the next trophic level. Of the remaining energy, some is used for the organism’s life processes, and the rest is
a) used in reproduction
b) stored in body tissue
c) stored as fat
d) eliminated as heat

The average year-after-year conditions of temperature and precipitation in a particular region are referred to as the region’s
a) weather
b) latitude
c) ecosystem
d) climate

All of the following factors contribute to Earth’s climate EXCEPT
a) latitude
b) longitude
c) transport of heat
d) shape and elevation of landmasses

Temperatures on Earth remain within a suitable range for life as we know it because of the
a) unequal heating of Earth
b) loss of heat to space
c) radiation of sunlight back into atmosphere
d) greenhouse effect

Each of the following is an abiotic factor in the environment EXCEPT
a) plant life
b) soil type
c) rainfall
d) temperature

Which is a biotic factor that affects the size of a population in a specific ecosystem?
a) average temperature of the ecosystem
b) type of soil in the ecosystem
c) number and kinds of predators in the ecosystem
d) concentration of oxygen in the ecosystem

An organism’s niche is
a) the range of physical and biological conditions in which an organism lives and the way in which it uses those conditions
b) all the physical and biological factors in the organism’s environment
c) the range of temperatures that the organism needs to survive
d) a full description of the place an organism lives

An interaction in which one organism captures and feeds on another organism is called
a) competition
b) symbiosis
c) mutualism
d) predation

Different species can share the same habitat, but competition among them is reduced if they
a) reproduce at different times
b) eat less
c) increase their population
d) occupy different niches

A symbiotic relationship in which both species benefit is
a) commensalism
b) mutualism
c) predation
d) parasitism

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