Annelids have a _____.
a) pseudocoelom
b) a true coelom
c) no coelom
d) none of the above
Ans: b) a true coelom
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Which of the following does not occur during the first trimester of pregnancy?
A. All of these events occur during the first trimester. B. cleavage C. gastrulation D. organogenesis E. sex determination
Which of the following does not belong in the domain Eukarya?
a. Plants b. Animals c. Bacteria d. Fungi e. Veterbrates
The mechanism of evolution proposed by Charles Darwin in The Origin of Species is
A) acclimatization. B) natural selection. C) acquired inheritance. D) adaptation.
Which of these would be an effect of an excess of thyroid hormones?
A) More thyroid hormone would be produced. B) A would release less TRH. C) B would release more TSH. D) The thyroid would swell and produce a goiter.