Which class is composed mostly of terrestrial earthworms?
a. Monogenoidea
b. Cestoda
c. Oligochaeta
d. Polychaeta
Ans: c. Oligochaeta
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Which of the following is(are) characteristic of
some amphibians? a. gills b. exchange of some gases occurs across their skin. c. lungs for oxygen uptake d. skin for carbon dioxide removal e. all of these
The use of microbes to make practical products such as vaccines or hormones is called (genomics/recombination/biotechnology)
What will be an ideal response?
Consider the life cycle shown in Figure 27-2. If the boxes labeled “n” and “2n” represent multicellular structures, this life cycle could be representative of all of the following except:
a. ferns
b. club mosses.
c. horsetails.
d. hornworts.
e. algae
In terms of controlling the spread of microbes throughout the environment, which facility has more stringent requirements?
A) A hospital B) A microbiology lab