What happens to the cotyledons of pea and maize (corn) seeds?
A) They remain in the soil and decompose.
B) They form a protective sheath around the developing root system.
C) They surround the base of the shoot to provide additional strength.
D) They immediately begin to use the sun's energy in photosynthesis.
Answer: A
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A. Dogs B. Frogs C. Sharks D. Humans E. All of the above are correct
How many turns of the Krebs cycle are needed to completely break down one molecule of glucose?
A) one B) two C) four D) three
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Indicate whether the statement is true or false.
When the Darwin/Wallace theory of natural selection is summarized, four central postulates emerge. Which of the following is NOT one of these four natural selection postulates?
A) Variations exist in any given generation of a species. B) Variations in traits are produced by mutations. C) Variations are, at least in part, heritable. D) Those individuals whose variations confer an advantage are more likely to survive and reproduce.