The difference between gross primary productivity
and net primary productivity is the
a. amount of sunlight reflected by plants.
b. rate of photosynthesis of autotrophs.
c. rate of energy utilization by autotrophs.
d. rate of consumption of autotrophs by herbivores.
e. net ecological productivity.
Answer: c
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Gene flow, defined as the movement of genes from one population to another, can take place by migration, as well as
A. physical movement of genes within an individual by transposons. B. removing the barriers between the populations. C. mating between individuals of adjacent populations. D. mating with certain trait-containing individuals. E. mating with dominant phenotypes.
A gene pool is
A. the genes that are unique to a species. B. all the genes in a population. C. all the similar genes in a gene family. D. a swimming hole for geneticists. E. a group of species that look alike but are not located in the same area at the same time.
Resolving power
a. is the amount that an object's image is enlarged. b. is the extent to which detail in an image is preserved during the magnifying process. c. is the degree to which image details stand out against their background. d. focuses light rays emanating from an object to produce an image.
If you put 20g of food in 180ml of sterile water and blend, what dilution factor does this represent?
A) 1:10 B) 1:100 C) 1:1000 D) This is not a dilution.