A major change in evolutionary patterns over long periods of time is best described as ____
a. macroevolution
b. microevolution
c. allopatric speciation
d. directional selection
e. sympatric speciation
ANSWER: a
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The three periods of the Mesozoic era in sequence from most ancient to most recent are
A. Permian, Triassic, and Jurassic. B. Cretaceous, Jurassic, and Triassic. C. Silurian, Ordovician, and Cambrian. D. Triassic, Jurassic, and Cretaceous. E. Cambrian, Ordovician, and Silurian.
The effect of population growth limiting
factors begin to become evident at about a. A. b. B. c. C. d. D. e. E
Variation among individuals that is due to factors other than genetic factors is called ________
A) phenotypic variation B) environmental variation C) broad-sense heritability D) narrow-sense heritability
In Figure 34-2, the palisade mesophyll is labeled:
a. 1.
b. 2.
c. 3.
d. 6.
e. 9.