Flowering plants rose to dominance in part because they __________ with animal pollinators. Fill in the blank(s) with the appropriate word(s)
ANSWER: coevolved
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Protists and bacteria are grouped into different domains because _____
A) protists eat bacteria B) bacteria are not made of cells C) protists have a membrane-bounded nucleus, which bacterial cells lack D) bacteria decompose protists E) protists are photosynthetic
The objective of the Doha (Qatar) Round of trade negotiations was to
a. increase tariffs on oil products. b. place quotas on agricultural imports to the Middle East. c. lower trade barriers between countries of varying prosperity. d. put technical barriers on intellectual property.
Thanks to a novel recessive mutation, a certain plant species has begun to invade colder Arctic regions outside of its normal range. However, this cold-tolerant mutation has not yet become fixed in the population. A second mutation arises that promotes self-pollination. Do you predict that the self-pollination allele will be selected for in the Arctic regions? Why or why not?
A. No. Plants that produce flowers must be cross-pollinated for proper seed development. B. Yes. The self-pollinated plant is more likely to maintain the cold-tolerant mutation, and plants in the Arctic are unlikely to be visited by pollinators. C. No. Outcrossing is always beneficial, since it enhances genetic diversity. D. Cannot make a prediction from the information given. It depends on whether the plant is normally insect-pollinated or wind-pollinated.
Teosinte was the forerunner of modern
A. oats. B. wheat. C. rice. D. maize. E. barley.