Mistletoe is a plant that grows in the branches of other trees. Mistletoe roots harm the host tree by penetrating the bark of the tree to steal water and nutrients. This is an example of
A. mutualism.
B. commensalism.
C. predation.
D. parasitism.
E. herbivory.
Answer: D. parasitism.
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Bacterial symbionts of termite hindguts play a critical role in the termite's
A) reproduction. B) nitrogen metabolism. C) resistance to fungal infection. D) reproduction and nitrogen metabolism.
The presence of detectable variation in the genomes of different individuals of a population is termed:a
DNA sequencing. b. DNA electrophoresis. c. DNA tandem repeats. d. polymorphism. e. DNA profiling
At some point in their life cycle, amphibians may respire via all of the following except:a
gills. b. lungs. c. swim bladder. d. skin. e. book lungs
DNA is methylated on which nucleotides?
A) cytosine B) thymine C) uracil D) guanine E) adenine