Ecology: Question Preview (ID: 11426)


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Which phrase best describes an ecosystem?
a) living organisms and nonliving materials interacting in a specific location b) all the living things in a specific location c) all the nonliving things in a specific location d) some nonliving materials passing through a living organism in a specific location
Which statement is best characeristic of an ecosystem?
a) It must have organisms that carry out autotrophic nutrition b) It is stable because it has consumers to recycle energy c) It must have producers and consumers, but not decomposers d) It always has two autrophs occupying the same niche
Which is a biotic factor in the environment of fresh-water fish?
a) the algae growing in the water b) the mud on the bottom of the pond c) the temperature of the water d) the amount of light penetrating the water
Which list includes only abiotic factors?
a) soil, water, air, and sunlight b) ducks, fish, soil, and water c) humidity, temperature, rodents, and grasses d) trees, flowering plants, mosses, and ferns
In ecology, a population is defined as
a) members of a single species inhabiting a given area b) members of a single species in the biosphere c) the biotic and abiotic factors d) members of a given genus inhabiting a given area
All the red foxes inhabiting a given forest constitute a
a) population b) community c) biome d) biosphere
All the plants and animals interacting in a given location nake up a
a) community b) population c) ecosystem d) species
Male grizzly bears can maintain territorial control over many square miles. This role as a top predator is known as its
a) niche b) limiting factor c) habitat d) ecosystem
For a producer to maintain itself, which factor must be present in its environment?
a) sunlight b) carnivores c) herbivores d) decomposers
Which contain the most energy?
a) producers b) primary consumers c) secondary consumers d) tertiary consumers
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