In a cross involving plants with round/wrinkled
seeds, yellow/green pods, and tall/dwarf stems, the
researcher is actually observing __________traits.
a. 4
b. 3
c. 6
d. 12
e. none of these
Answer: b
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Similar to the tundra, but without a permanent ice layer, this biome is characterized by low and slow-growing plants with little protection from UV radiation
A. taiga B. alpine C. chaparral D. deciduous forest E. rain forest
Zero population growth is achieved
a. when a population reaches the carrying capacity of the environment. b. when emigration and immigration are balanced, and the number of births equals the number of deaths. c. anytime that births exceed deaths. d. anytime that deaths exceed births. e. when emigration and immigration are prevented.
Habitat is best described as:
a. the local environment in which a species lives. b. what a species eats. c. what competes with a species. d. the abiotic components of a species' environment. e. the totality of adaptations by a species to its environment.
The mating displays of a male mallard duck do not attract a female pintail duck. This is an example of
A. seasonal isolation. B. behavioral isolation. C. habitat preference. D. geographic isolation.