Which of the following taxonomic ranks is least inclusive?
a) class
b) genus
c) order
d) phylum
e) family
Answer: b) genus
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A more modern equivalent to Koch's Postulates is termed
A. Pasteur's Systematics. B. Hoch's Postulates. C. Atomic Theory. D. Protein Theory. E. Molecular Postulates.
In sponges, spicules are secreted by ____
a. amoeboid cells b. choanocytes c. sperm cells d. porocytes e. pinacoderm
Where is the central pacemaker that controls circadian rhythm found in many animals?
a. in the suprachiasmatic nucleus b. in the eye c. in the skin d. in the optic nerve
A pollination syndrome is
A. a brushlike tongue of hummingbirds to which pollen adheres. B. the synchronous release of pollen by many individuals of wind-pollinated trees. C. a series of bristles on the backs of insects to which pollen adheres. D. the simultaneous release of two sperm, one to affect fertilization and the other to initiate formation of endosperm. E. specializations of plants that attract a specific kind of pollinator.