An advantage of a complete digestive system over a gastrovascular cavity is that the complete system _____
A) excludes the need for extracellular digestion
B) allows for specialized regions with specialized functions
C) allows extensive branching
D) facilitates intracellular digestion
B
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Plant roots that are in a horizontal position grow down because
A. Cells on the upper side elongate more than those on the lower side. B. Auxins are stimulating cells on the lower side to elongate more. C. Auxins are being pulled to the upper side. D. Auxins are having no influence on this process. E. Statoliths are pushing auxins to the upper side.
Where in a host's body do most typical tapeworms live and reproduce?
A. in the bloodstream of the host B. in the liver C. in the intestine of the host D. in the larva
What does the fossil record tell us?
What will be an ideal response?
What is the order of the five stages of infectious disease?
A) incubation period, acute phase, prodromal phase, convalescent phase, period of decline B) prodromal phase, acute phase, incubation period, period of decline, convalescent phase C) acute phase, prodromal phase, incubation period, convalescent phase, period of decline D) incubation period, prodromal phase, acute phase, period of decline, convalescent phase E) acute phase, incubation period, prodromal phase, convalescent phase, period of decline