Which of the following statements describes mycorrhizae?
A. A mycorrhiza is a mutualistic relationship between fungi and the roots of most plants.
B. A mycorrhiza is a parasitic relationship between bacteria and the roots of most plants.
C. A mycorrhiza is a mutualistic relationship between bacteria and the roots of most plants.
D. None of these statements describes a mycorrhiza.
Answer: A
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Although sexual reproduction has a higher metabolic cost than asexual reproduction, many organisms use it. Why is it adaptive?
What will be an ideal response?
A plant performing photosynthesis will produce and consume .
A. oxygen; carbon dioxide B. oxygen; water C. carbon dioxide; oxygen D. carbon dioxide; water E. water; carbon dioxide
Which of the following is a virus with an icosahedral head, a capsid that contains primarily three proteins, a connecting neck with a collar and long whiskers, a long tail and a complex base plate?
A. influenza virus B. tuberculosis C. measles virus D. HIV E. T4 bacteriophage
The broad band of loose connective tissue beneath the mucosa that contains blood vessels, lymph, and nerves is called the
A. muscularis. B. submucosa. C. mucosa. D. serosa. E. diverticulosis.