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This activity contains 23 questions.

Question 1
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What is an herbarium?
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Question 2
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Classification schemes have been reorganized several times by systematists. What is the most common reason for reorganizing groups of living things?
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Question 3
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The six kingdoms commonly delineated by many biologists divide organisms into
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Question 4
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Which of the following statements best describes the current knowledge about Earth's biodiversity?
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Question 5
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Relationships among modern species are often determined by comparing
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Question 6
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The "tree of life" model gives information about the
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Question 7
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The most diverse group of eukaryotes are
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Question 8
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A newly discovered organism would most likely be identified as a prokaryote if it
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Question 9
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Which is of the following statements is a reason why bacteria and archaea are important in biochemical research?
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Question 10
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The modern group designated as the Animal kingdom typically contains
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Question 11
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While studying soil-dwelling organisms on a forest floor, a biologist discovers what appears to be a new species. The organism consists of string-like chains of cells that weave through a decaying tree stump. The biologist cultures the species in the lab and finds that its cells contain nuclei but no chlorophyll and that some cells occasionally transform into sacs of tiny spores. The biologist will likely classify the new species as a(n)
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Question 12
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A marine biologist has been observing a new microscopic organism discovered on a coral reef. Each cell in the organism contains a distinct nucleus, and after several weeks of close observation, it does not appear that the organism ingests other living organisms or parts of organisms as a source of energy. The biologist will likely classify this organism as a(n)
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Question 13
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Evolution from an early confederation of cells is an idea associated with
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Question 14
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The theory that eukaryotic cells were derived from symbiotic relationships between prokaryotic cells is most strongly supported by
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Question 15
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Biologists use the term Cambrian explosion to refer to
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Question 16
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Vertebrates are distinguished from other organisms in their kingdom by the presence of
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Question 17
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Which circumstance would be most likely to result in adaptive radiation?
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Question 18
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A new species has been discovered that lives in very salty water. This organism is most like to be a member of which group?
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Question 19
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The maple tree group, or genus Acer, contains many similar types of trees. If a botanist suspects that these species are all the result of speciation from a common ancestral maple tree, what would be the best strategy for testing this hypothesis?
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Question 20
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In the search for new antibiotics to fight bacterial diseases, many researchers focus attention on fungal species because
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Question 21
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The uppermost branches on a phylogenetic tree represent
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Question 22
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A scientist is interested in a compound from an organism on the endangered species list, but the organism is too rare to be used as a source of large quantities of this chemical. Why would it or would it not be logical to search for related chemicals in an organism of the same genus?
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Question 23
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What is the goal of the United Nations Convention on Biodiversity?
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