BYU PWS 150 Final Exam Questions and
Answers 100% Pass
DDT -
CORRECT ANSWER: (Dichlorodiphenyltrichloroethane) A pesticide
that was extremely cheap, harmful to pests but not humans or animals,
and worked a diverse amount of pests.
QUESTION: Effects of DDT -
CORRECT ANSWER: Good things - prevents disease, cheap to make,
kills lots of insects. Bad things - Bird species declined in the 1950s and
1960s. DDE resulted in thin shelled eggs. bioaccumulates and effects
birds eggs.
QUESTION: Killed the mosquitoes -
CORRECT ANSWER: DDT did what in preventing malaria?
,QUESTION: Biomagnification -
CORRECT ANSWER: the multiplying effect of bioaccumulation
through the food chain
QUESTION: Bioaccummulation -
CORRECT ANSWER: many synthetic organic chemicals are
soluble in lipids (fats)
QUESTION: Pests -
CORRECT ANSWER: general term for an organism that is noxious,
destructive, or troublesome. Harmful insects.
QUESTION: Silent Spring (1962) -
,CORRECT ANSWER: Book written by Rachel Carson that exposed
the harmful effects of DDT and insecticides. (DDT was later banned in
the US in the 1970s)
QUESTION: Agricultural Pests -
CORRECT ANSWER: Feed on crops
QUESTION: Weeds -
CORRECT ANSWER: plants that compete with crops, forests, grasses
QUESTION: Herbicides -
CORRECT ANSWER: chemicals that kill plants and weeds
QUESTION: Pesticides -
CORRECT ANSWER: chemicals that kill animals and insects
, QUESTION: Resurgence -
CORRECT ANSWER: Problems of chemical pesticides, occurs after a
pest has almost been eliminated. The population recovers and even
explodes.
QUESTION: Four types of natural enemies -
CORRECT ANSWER: predators, parasitoids,
pathogens, and plant-eaters. Effective natural enemies are not always
available
QUESTION: Integrated pest management (IPM) -
CORRECT ANSWER: IPM aims to minimize use of synthetic organic
pesticides. The goal is not pest eradication, but keeping crop damage
below the economic threshold
QUESTION: The four approaches of IPM -
CORRECT ANSWER: Set action thresholds
Answers 100% Pass
DDT -
CORRECT ANSWER: (Dichlorodiphenyltrichloroethane) A pesticide
that was extremely cheap, harmful to pests but not humans or animals,
and worked a diverse amount of pests.
QUESTION: Effects of DDT -
CORRECT ANSWER: Good things - prevents disease, cheap to make,
kills lots of insects. Bad things - Bird species declined in the 1950s and
1960s. DDE resulted in thin shelled eggs. bioaccumulates and effects
birds eggs.
QUESTION: Killed the mosquitoes -
CORRECT ANSWER: DDT did what in preventing malaria?
,QUESTION: Biomagnification -
CORRECT ANSWER: the multiplying effect of bioaccumulation
through the food chain
QUESTION: Bioaccummulation -
CORRECT ANSWER: many synthetic organic chemicals are
soluble in lipids (fats)
QUESTION: Pests -
CORRECT ANSWER: general term for an organism that is noxious,
destructive, or troublesome. Harmful insects.
QUESTION: Silent Spring (1962) -
,CORRECT ANSWER: Book written by Rachel Carson that exposed
the harmful effects of DDT and insecticides. (DDT was later banned in
the US in the 1970s)
QUESTION: Agricultural Pests -
CORRECT ANSWER: Feed on crops
QUESTION: Weeds -
CORRECT ANSWER: plants that compete with crops, forests, grasses
QUESTION: Herbicides -
CORRECT ANSWER: chemicals that kill plants and weeds
QUESTION: Pesticides -
CORRECT ANSWER: chemicals that kill animals and insects
, QUESTION: Resurgence -
CORRECT ANSWER: Problems of chemical pesticides, occurs after a
pest has almost been eliminated. The population recovers and even
explodes.
QUESTION: Four types of natural enemies -
CORRECT ANSWER: predators, parasitoids,
pathogens, and plant-eaters. Effective natural enemies are not always
available
QUESTION: Integrated pest management (IPM) -
CORRECT ANSWER: IPM aims to minimize use of synthetic organic
pesticides. The goal is not pest eradication, but keeping crop damage
below the economic threshold
QUESTION: The four approaches of IPM -
CORRECT ANSWER: Set action thresholds
