Which of the following protist group does not have flagellated cells?
a. water molds
b. brown algae
c. euglenoids
d. red algae
e. golden algae
D
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Lakes with elevated dissolved nutrients and low water clarity are called
A. lotic. B. oligotrophic. C. eutrophic. D. pelagic. E. photic.
A single seed lands on one of a group of isolated islands. Several million years later, its descendants
have evolved into a number of new species on the different islands, representing a variety of trees, shrubs, and vines. At that point in time, we have an example of
a. adaptive radiation. b. punctuated equilibrium. c. genetic drift. d. microevolution. e. mutation.
The chromosome theory of inheritance states that
A) chromosomes that exhibit mutations are the source of genetic variation. B) the behavior of chromosomes during meiosis and fertilization accounts for patterns of inheritance. C) the behavior of chromosomes during mitosis accounts for inheritance patterns. D) humans have 46 chromosomes.
In terms of the number of species, the most successful class of arthropods is
A. Hexapoda. B. Chelicerata. C. Myriapoda. D. Chilopoda. E. Crustacea.