In its use in conservation efforts, lichens are classified as an example of a(n) ____
a. biological magnified species
b. endangered species
c. biodiverse species
d. indicator species
e. exotic species
ANSWER: d
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A horseshoe crab uses its long extended spine
for what purpose?
a. defending its territory b. digging for clams c. fighting for mates d. protection from predators e. flipping itself right side up
What is the ultimate source of genetic variation within a population?
a. Mutations in DNA b. Adaptation of a species to environmental changes c. A sensory system that can detect an environmental change d. Homeostatic mechanisms that compensate for environmental changes e. A system of locomotion that allows an organism to escape environmental changes
Which one of the following statements about endosymbiosis and the origin of the eukaryotic cell is FALSE?
A. Many compartments of the eukaryotic cell are derived from the endomembrane system. B. Mitochondria are the descendants of purple bacteria. C. The chloroplasts of red and green algae are the descendants of cyanobacteria. D. Ultimately, both the chloroplast and the mitochondria of eukaryotes are descendants of prokaryotic cells. E. Algae incorporated prokaryotic cells that became chloroplasts, but never acquired mitochondria.
Which genera is likely the most recent ancestor of the genus Homo?
A. Ardipithecus B. Pan C. Sahelanthropus D. Paranthropus E. Australopithecus