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, stamens, and anthers
D. calyx, corolla, carpels, and pistils
E. calyx, corolla, androecium, and gynoecium
E. calyx, corolla, androecium, and gynoecium
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The nuclear condition (ploidy) that club fungi
spend most of their lives in is
a. diploid. b. haploid. c. dikaryotic. d. mycokaryotic. e. triploid.
What is the proper sequence of air flow in the human respiratory system?
a. nasal cavities, larynx, pharynx, bronchi, trachea b. nasal cavities, pharynx, bronchi, larynx, trachea c. nasal cavities, pharynx, larynx, trachea, bronchi d. nasal cavities, larynx, pharynx, trachea, bronchi e. nasal cavities, bronchi, larynx, trachea, pharynx
Which group of flatworms are primarily external parasites of fish?
a) monogeneans b) trematodes c) cestodes d) turbellarians
The ocean
Select one: a. lacks life below the first several hundred feet. b. has zooplankton but not phytoplankton. c. covers little of the Earth's surface. d. is not affected by freshwater pollution. e. covers three-fourths of the planet.