Biology Semester Review 6: Question Preview (ID: 9680)

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During cellular respiration, organisms produce _____.
a) oxygen
b) nitrogen
c) carbon dioxide
d) carbon

The less energy available to a population, the _____ population will be.
a) larger
b) smaller
c) weaker
d) stronger

All plants and animals depend on energy from the _____.
a) ocean
b) biosphere
c) sun
d) biome

_____ eat only plants.
a) Carnivores
b) Omnivores
c) Producers
d) Herbivores

Organisms that make their own food are called _____.
a) consumers
b) producers
c) condensers
d) decomposers

A population of a species is able to evolve because _____.
a) its environment changes.
b) mutations occur in its gametes.
c) it changes slowly.
d) all its organisms are the same.

The geologic time scale is useful to _____.
a) see when different kinds of organisms first appeared
b) tell how various ancient organisms lived and died
c) determine the relative ages of fossils
d) explain why mass extinctions have occured

Which theory explains that organisms change because of adaptations that help them survive?
a) homologous structures
b) descent of modification
c) natural selection
d) geographic isolation

The group made of humans and their humanlike ancestors is called _____.
a) Homo sapiens
b) Australopithecus
c) primates
d) hominids

Which of the following would NOT help explain how evolution occurs?
a) Organisms produce many more offspring than can survive.
b) All the individuals in a population are identical.
c) Individuals with traits best suited to the environment tend to survive.
d) Survivors pass on their genes (and traits) to offspring.

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