Earthworms possess both male and female organs on separate segments. Mating could be described as "parallel parking" in opposite directions, and cross-fertilizing. Given this information, which of the following is (are) true?
A. Maintaining any system not clearly male or female is disadvantageous; the earthworm is trapped in an evolutionary dead end.
B. This is primarily to allow them to self-fertilize if no other worm is in their sector of the soil.
C. This is evidence of a primitive state that is generally less efficient than separate sexes.
D. This is an advantage since they can mate with any other earthworm of the same species that they encounter.
Answer: D
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A. Klinefelter syndrome. B. Turner syndrome. C. Down syndrome. D. Polyploid syndrome. E. Edward syndrome.
What occurs in monocot seed germination that
does NOT occur in eudicot seed germination?
a. starch hydrolysis b. the cotyledon does not emerge from the seed c. the embryonic root emerges last d. meristem cells do not start dividing until the seedling is fully established e. all of these things occur in both monocot and eudicot seed germination
Which of the following statements is supported by the evidence from the tree
A. All the anole species in this tree do not share a common ancestor. B. Anolis coelestinusis more closely related to Leiocephalus carinatusthan to any other anole species. C. Anolis coelestinusis the oldest anole species. D. The anole species on Puerto Rico and Hispaniola evolved from a common ancestor.
Most CO2 from catabolism is released during
A) glycolysis. B) the citric acid cycle. C) lactate fermentation. D) electron transport. E) oxidative phosphorylation.