A researcher is investigating the morphology of complete flowers. Which of the following organs must his flowers contain?
A. calyx, corolla, receptacle, and carpels
B. calyx, corolla, carpels, and ovules
C. calyx, corolla, carpels, and pistils
D. calyx, corolla, androecium, and gynoecium
E. calyx, corolla, stamens, and anthers
Answer: D
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A grouping that includes an ancestor and some, but not all, of the descendants of that ancestor is described as:
A. paraphyletic. B. polyphyletic. C. monophyletic. D. convergent. E. analogous.
The value of inserting human genes suspected of
causing Alzheimer disease into mice is to a. make mice act more human. b. make antibodies, which can be injected into suffering patients. c. develop mice that can serve as models for study of this condition. d. use the mice for production of a vaccine for the disease. e. accomplish all of these.
Anti-inflammatory medication would suppress
A. the release of nitric oxide from endothelial cells. B. the release of cytokines. C. leukocyte movement through the capillary wall. D. vasodilation. E. All of these statements are correct.
Viruses infecting protists, including algae, have never been detected.
Answer the following statement true (T) or false (F)