1. Plague as it exists in rural or forested areas among wild rodents is called:
Epidemic plague.
Sylvatic plague.
Urban plague.
Reservoir plague.
2. Until recently the Norway rat was the major reservoir host of murine typhus in California, where the disease was common in eastern Los Angeles and Orange counties, where the principal reservoir is probably the:
Roof rat.
Skunk.
Opossum.
Wood rat.
3. Dense growth of ornamental or other plants, such as Algerian ivy and Himalayan blackberry, are particularly favorable habitats for the:
Norway rat.
House mouse.
House cat.
4. The normal life expectancy of house mice is approximately:
2 to 3 months.
6 to 9 months.
1 year.
2 years.
5. Which of these statements about domestic rodents is most true:
The Norway rat rarely constructs burrows.
The house mouse cannot live outdoors.
They are poor swimmers.
The roof rat and house mouse are better climbers than the Norway rat.
6. The domestic rodent with a combined head and body length of 7-1/2 to 10 inches, a tail usually shorter than the head and body length, a heavy body, blunt muzzle, and relatively small, coarse, close-set ears is most likely the:
House mouse
7. The usual home range of the roof rat is:
100 to 200 feet, or one city block.
Over 200 feet or several city blocks.
50 to 75 feet.
10 to 30 feet.
8. The chief feature used to distinguish rodents from all other mammals is:
A round scaly-looking and nearly hairless tail.
Five-toed hind feet.
Large incisors separated from the molars by a long gap.
Grayish-brown fur and short ears.
9. The rodent-associated disease transmitted by infected flea feces, which are scratched into the skin is:
Leptospirosis.
Relapsing fever.
Plague.
Murine typhus.
10. Rat populations in sewers are highest where there are numerous:
Breaks in the sewer line.
Garbage disposal units.
Domestic connections.
Manholes.
11. Domestic rats can:
Climb vertical pipes up to 6 inches in diameter.
Jump up to 6 feet horizontally.
Enter through openings larger than 1/2 inch.
Burrow to a depth of 6 feet in soil.
12. Rodents characteristically have:
Two upper and two lower incisors.
Two upper incisors only.
Two lower incisors only.
Lack incisors.
13. Rodents that are called commensal are referred to that way because:
They live together in colonies.
They have heightened ability to communicate with one another.
They live in close association with humans.
The rodent is the symbol of the Communist Party.
14. Rodents generally have teeth that are adapted for:
Piercing.
Grinding.
Gnawing.
Chewing.
15. Domestic rodents:
Are poor swimmers.
Cannot swim.
Are good swimmers.
Can swim only when under severe pressure to excape.