18.
Body Iice eggs are laid:
a. At the base of hairs on the head.
b. At the base of bodiIy hairs.
c.
In the seams of clothing.
d. In masses in pockets of clothes.
19.
Which of the following statements is true about the crab louse?
a. It transmits louse-borne relapsing fever.
b. It transmits louse-borne typhus fever.
c.
It transmits trench fever.
d. It is not known to transmit any disease.
20.
Only one feature is typical of all insects. Which one?
a. Four pairs of legs.
b. Wings.
c.
Three body regions.
d. Cephalothorax.
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MD0170
1-31