________ are plants with primitive conducting systems.
A. Ferns
B. Mosses
C. Coniferous trees
D. Liverworts and hornworts
Answer: B
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Psilotum lacks
(a) roots. (b) a mechanism to take up water and minerals. (c) vascular tissue. (d) alternation of generations.
What two evolutionary agents are most responsible for decreases in genetic variation in a population?
What will be an ideal response?
A merodiploid is:
A. a haploid organism that contains a second copy of a part of its genome. B. a haploid organism that is missing part of its genome. C. a diploid organism that is missing part of its genome. D. a diploid organism that contains another copy of its genome.
Which of the following is NOT an environmental justice issue?
A. industrial complexes built in poor neighborhoods B. food recall of high-priced fresh fish affecting mostly wealthy consumers C. extreme weather associated with global climate change taking the lives of the homeless D. rising sea levels associated with global climate change threatening remote coastal islands E. landfills built in poor neighborhoods