One characteristic of the class Holothuroidea is:
a. that most are predators that consume partially digested prey.
b. that most of the species are extinct.
c. that they have a reduced endoskeleton consisting of microscopic plates embedded in the
body wall.
d. that moveable spines are used to facilitate locomotion.
e. that they have a distinct central disk with very long, slender arms
C
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DNA sequencing can reveal
A) mutations that do not alter phenotype. B) mutations that do not alter genotype. C) which tissues express a gene. D) how many genes a person has.
Which cranial nerve performs both sensory and motor functions?
a. olfactory b. oculomotor c. glossopharyngeal d. optic
Growth of a forest in an abandoned corn field is an example of _____
a. primary succession c. secondary succession b. resource partitioning d. competitive exclusion
In The Origin of Species, Darwin argued that the mechanism of descent with modification was ________.
A. artificial selection B. natural selection C. bionomial nomenclature