Diseases can be transmitted
a. by inanimate vehicles.
b. by living vectors.
c. person to person.
d. by inanimate vectors.
e. by a, b, and c.
Answer: E
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Fill in the blank(s) with the appropriate word(s).
Aquatic organisms generally require less structural support (e.g., skeletons) due to water's high
A) specific heat. B) buoyancy. C) surface tension. D) viscosity.
The larvae of some cnidarians are known as __________ larvae
A. veliger B. trochophore C. planula D. nauplius E. zoea
Which features are found in organisms that have an incomplete digestive tract?
A. pharynx, digestive enzymes and diffusion of nutrients B. digestive enzymes, esophagus and diffusion of nutrients C. crop, digestive enzymes and diffusion of nutrients D. gizzard, salivary amylase and a pharynx