Monocot floral parts usually occur in multiples of
A) five.
B) four.
C) two.
D) three.
Answer: D
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Energy yields are high enough for Fe2+ oxidation that the bacteria that perform this reaction require only small quantities of Fe2+ to be available
Indicate whether the statement is true or false.
Electron microscopes differ from light microscopes in that
A. electrons replace light. B. electromagnets replace glass lenses. C. resolution is higher. D. magnification is higher. E. All of the choices are correct.
Amoebas use pseudopodia for movement and
a. sexual reproduction. b. excretion. c. feeding. d. avoiding predation. e. asexual reproduction.
Incompatibilities between the developing embryo and the maternal organism that cause the embryo to
abort spontaneously may prevent individuals of different populations from producing fertile offspring. Such differences may be an example of a. isolating mechanisms. b. allele frequencies. c. mutations. d. founder effects.
e. gene flow.