The limbs of animals such as whales, cats, bats, and humans contain the same set of bones organized in similar ways yet have dissimilar functions. These structures are said to be:
A) vestigial. B) morphological. C) polygenic. D) homologous.
Answer: D
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The phylogeny below represents a hypothesis for the evolutionary relationships among major groups of plants. If it is correct, in what order should we predict to find the fossils of these groups, in order from oldest to youngest?
A. flower group, conifer group, ferns, moss group B. conifer group, ferns, moss group, flower group C. ferns, moss group, conifer group, flower group D. moss group, ferns, daisy E. ferns, conifer group, moss group
If a solution contains equal amounts of hydrogen ions and hydroxide ions, the solution can be described as ________.
a. acidic b. basic c. neutral d. both acidic and basic
The Island of Krakatau has provided an ideal setting for studies of which kind of succession?
A) primary B) secondary C) tertiary D) quaternary
Females of many insect species, including honeybee queens, can store gametes shed by their mating partners in _____
A) their nests B) the abdominal tract C) the uterus D) the spermatheca