Birds store food in a modified portion of the lower esophagus called the
A. crop.
B. epiglottis.
C. gizzard.
D. alimentary canal.
E. pharynx.
A. crop.
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All of the following are methods of prion disease transmission EXCEPT
A. organ or tissue transplantation. B. inheritance (genetic). C. contamination through use of inadequately processed surgical instruments. D. ingestion of infected tissue. E. inhalation (airborne).
In the intestinal tract, Entamoeba histolytica
A. lives as a commensal in the lumen of the intestine. B. can invade the host tissue. C. can undergo excystation in the small intestine. D. All of the choices are correct.
Philodendron flowers have to use a lot of energy to attract beetles as pollinators. This is similar to the energy used by many other flowering plants to produce in order to attract pollinators.
A. spores B. nectar C. seeds D. leaves E. pollen
An individual who is attracted to light is exhibiting
a. negative phototaxis. b. positive phototaxis. c. negative thigmotaxis. d. positive thigmotaxis.