REHS/RS Online Practice Exam Graded A+

REHS/RS Online Practice Exam Graded A+ Lice require human blood to live True The housefly consumes only liquids, and therefore, must transform all other substances to the liquid state before digestion. True The control of weeds is accomplished by; a. preventing the spread of weeds into new areas b. destruction of top weeds and underground parts of weeds c. destruction of weed seeds in the soil d. all of the above (This is the answer) The peak seasons for rats to breed in temperate zones are Spring and Fall When first considering the control of houseflies, roaches, and rats, the primary emphasis should be on: Basic community environmental sanitation to eliminate the conditions that make possible their survival and reproduction Which of the following has been proven to be MOST effective for controlling ragweed? Spraying in early or mid spring DDT has been banned for use in all countries except parts of Africa, Sweden, Great Britain, and all South American Countries: False Rocky Mountain spotted fever is transmitted by: Dog ticks In general, there are three kinds of weeds. These are: Annuals, biennials, and perennials Items such as tennis balls, golf balls, gloves, and auto tires that come into contact with poison ivy, oak, and sumac may spread the poison as well as physical contact with the plants. True The first step in a rat control program is: A community survey The key to an effective, long-term, rodent control program is: Community sanitation The main objective in pest control should be Integrated pest management involving the use of a combination of educational, cultural, biological, physical, chemical, and legal measures, as appropriate An adult rat requires approximately______ of food per day. 1 Ounce Bat-proofing should be done in the______, when bats are hibernating in caves: Mid-autumn through spring An example of a single dose rodenticide is Red squill Red squill is specific for rats and nontoxic to other warm-blooded animals when used in recommended dosages. The specific toxicity to rats is due to their inability to vomit while the product induces vomiting in other animal species. (Best for Norway rats, not Roof rats) For a pesticide to be permitted for application on a raw agricultural food or feed, the residue must exceed the tolerance established for the product by the Department of Health and Human Services under the conditions of use. False EPA regulates the safety of the food supply by setting tolerance levels, or maximum legal limits, for pesticides on food commodities and in animal feed available for sale in the United States. The purpose of the tolerance program is to ensure that consumers are not exposed to unsafe levels of pesticide residues in food. Rodents are the primary reservoir/host of the hantavirus. In particular, ______ appears to be the primary reservoir for hantavirus, which was first recognized in 1993 in the southeastern United States. Deer Mouse Psittacosis/Ornithosis is spread by: Pigeons Vector-borne encephalitidies are not communicable directly from person to person, but only by the bite of infected mosquitos. True Vector-borne diseases rely upon organisms, named vectors, such as mosquitoes, ticks or sand flies that have an active role in the transmission of a pathogen from one host to the other. Because the pesticides lindane and malathion do not stain they are excellent liquid insecticide sprays to use for controlling bedbugs in mattresses or other bedding. False An example of an anticoagulant rodenticide is: Warfarin (a blood thinner) In order to control rats at open dumps, a poison-bait application program should be started_____before a site is abandoned or converted and before earthmoving equipment is brought to the site. 2 weeks Malaria prevention programs have been losing their effectiveness in many countries mainly because of: a. inadequate funding and research b. adaption of mosquitoes to new environments c. resistance to certain insecticides and resistance of Plasmodium falciparum parasites to drugs used to prevent and treat malarial infections d. all of the above (This is the answer) Soil sterilants are a type of herbicide which are: Absorbed by the plant root system The prime feeding time of the Anopheles mosquito is usually around midday: False They prefer to feed at dusk, dawn, or at night Which of the following is not a condition that encourages the growth of weeds? a. Soil abuse b. Over cultivation c. Deforestation d. None of the above (This is the answer) Rattus rattus is also referred to as the: Roof rat Some of the main sources of pollen are trees in the summer, grasses in the spring, and weeds in the winter. False Bats serve a useful purpose by keeping down the number of insects True The most practical way to control hay fever is to: Treat the patient Relief from hay fever may be obtained by a. moving to a pollen-free area b. acquired immunity c. air conditioning and air purification with appropriate filters d. all of the above (This is the answer) Rattus norvegicus is also referred to as the a. sewer rat b. Norway rat c. brown rat d. all of the above (This is the answer) Sodium fluoroacetate, also known as "1080", is the most effective fast-acting rodenticide available for use throughout the United States: False Vector-borne encephalitidies have replaced malaria as the major mosquito-borne disease in North America. True The Norway Rat has a normal home range of 100 to 150 feet The poison found in poison ivy, oak, and sumac is extremely volatile False Hay fever is correctly referred to as: Pollenosis A "chigger" is the larval stage of a type of: Mite Bats are a threat to humans because they carry: Rabies Pediculosis is an infestiation of: Lice Bat-proofing should not be conducted from May through August because baby bats can be trapped inside. True A female rat becomes sexually mature in: 2 to 3 months The female and male mosquito feed only on the blood of humans and animals. False A pesticide that ______ is referred to as a "Restricted Classification" pesticide and is generally not available to the homeowner. a. is highly toxic b. requires special knowledge for application c. requires special equipment for application d. all of the above (this is the answer) Yellow jackets usually build their nests below the ground True The full potential of naturalistic and source-reduction measures should be applied before considering chemical means for controlling arthropods, rodents, and weeds. True A single pair of rats are capable of producing ____ litters of young per year 4 to 6 _____Is an infectious disease of the skin caused by burrowing of the female mite into the skin where it deposits its eggs. Scabies The poison of poison ivy, oak, and sumac is an oleoresin that is found in all parts of the plant except the Woods