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

Biology & Microbiology

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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

Biology & Microbiology

Which group of flatworms are primarily external parasites of fish?

a) monogeneans b) trematodes c) cestodes d) turbellarians

Biology & Microbiology

The nuclear condition (ploidy) that club fungi

spend most of their lives in is

a. diploid. b. haploid. c. dikaryotic. d. mycokaryotic. e. triploid.

Biology & Microbiology

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.

Biology & Microbiology