The discovery of immense ridges and trenches stretching thousands of kilometers across the seafloor in the 1950’s led
to acceptance of the theory of ____.
a. magnetic poles
b. creationism
c. evolution
d. natural selection
e. plate tectonics
ANSWER: e
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Work of which of the following scientists resulted in an end to the theory of spontaneous generation
A. Elhrich B. Jenner C. Koch D. Hooke E. Pasteur
Scientists have discovered gene products, including the hormone ELH, that control all components of egg-laying behavior in Aplysia slugs. This discovery confirms that
A. the egg-laying behavior has absolutely no nervous system involvement. B. genes can control endocrine gland secretions that control behavior. C. this slug could avoid being eaten by garter snakes. D. genes only influence physiology and structure but not behavior. E. the egg-laying behavior is innate or hardwired into the slug's brain.
The body opening that serves solely as the exit for wastes from a complete digestive tract is known as the ___________________.
A. anus B. cloaca C. rectum D. digestive tract E. digestive cavity
During which period of the Paleozoic era did the first winged insects evolve?
A.Carboniferous B. Devonian C. Permian D. Ordovician E. Cambrian