The diameter of a tree increases due to new growth in the
A. bark.
B. xylem.
C. cambium.
D. All of these answers are true.
C. cambium.
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Which of the following statements is NOT true of megaspores?
A. Megaspores produce female gametophytes. B. Megaspores are larger than microspores. C. A megaspore is a kind of spore of a seed plant. D. The cells of the walls of the megasporangium are diploid but the megaspores themselves are haploid. E. Megaspores are diploid.
Strains of Staphylococcus aureus that are resistant to ________ generally cannot be treated with antibiotic therapy.
Fill in the blank(s) with the appropriate word(s).
Nadia, who is 25 years old, wants to be taller because she is just 5 feet tall. Of the choices given, which would be the wisest option for Nadia?
A) Take thyroxine daily. B) Use GHRH so she will have her own natural growth. C) Take injections of growth hormone. D) Do nothing.
The type of polio that involves the infection of the brain stem and medulla is
A. asymptomatic polio. B. post-polio syndrome. C. bulbar poliomyelitis. D. minor polio. E. non-paralytic polio.