About 80% of all land plants, including grasses, shrubs, and trees, form mycorrhizae. Mycorrrhizae are which of the following?
A. associations between fungi and plant leaves
B. associations between fungi and plant roots
C. associations between bacteria and plant leaves
D. associations between bacteria and plant roots
E. associations between bacteria and fungi
Answer: B. associations between fungi and plant roots
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Campylobacter jejuni is commonly found in the intestinal tract of ________.
A. chickens B. cattle C. turkeys D. All of the choices are correct.
A fairly conserved gene is compared between a human, a chimpanzee, a bear and a banana. How
would you expect their DNA sequences to relate? What will be an ideal response?
Which type of cell found in the nervous system is the most numerous?
A) Schwann cell B) sensory cell C) neuroglial cell D) neuron
Which of the following characteristics of genetic material accounts for the need to get a flu vaccine every year, but a polio vaccine once in a life time?
A. transmission B. variation C. information D. replication and transmission E. replication