Question

1. Development of insecticide or herbicide resistance is considered a microevolutionary process and pesticides are the selective agent. Development of resistance therefore is best characterized accurately by which statement.
   1. Resistance is a change in frequency of rare alleles from very low probability of occurrence to higher probability of occurrence
   2. Resistance is caused by the mutation of alleles after pesticide exposure
   3. Pesticide resistance will take at least a decade of pesticide selection pressure before it develops
   4. Resistance development will always be a fitness cost to insects and plants and thus resistant individuals will be as fecund as before the exposure
2. When an insect population is sprayed repeatedly with the same pesticide, the dose-response curve expressed in prohibit units changes until the whole population is resistant. The one parameter that changes is called the…..
   5. Asymptote
   6. Parabola
   7. Hypotenuse
   8. X-axis
   1. Slope
   10. Y-axis
3. Karate is an insecticide in the pyrethroid class. What is the common name of its active ingredient?
   1. Fenpropathrin
   2. Cypermethrin
   3. Lambda-cyhalothrin
   4. Permethrin
   5. Tau-fluvalinate
4. An insecticide active ingredient has an oral LD50 less than 10 mg/kg. What signal word must appear on the product label [____________]

Answer 1

1. Development of insecticide or herbicide resistance is considered a microevolutionary process and pesticides are the selective agent. Development of resistance therefore is best characterized accurately by which statement.

1. Resistance is a change in frequency of rare alleles from very low probability of occurrence to higher probability of occurrence
2. Resistance is caused by the mutation of alleles after pesticide exposure
3. Pesticide resistance will take at least a decade of pesticide selection pressure before it develops
4. Resistance development will always be a fitness cost to insects and plants and thus resistant individuals will be as fecund as before the exposure

2. When an insect population is sprayed repeatedly with the same pesticide, the dose-response curve expressed in prohibit units changes until the whole population is resistant. The one parameter that changes is called the…..

1. Asymptote
2. Parabola
3. Hypotenuse
4. X-axis
5. Slope
6. Y-axis

3. Karate is an insecticide in the pyrethroid class. What is the common name of its active ingredient?

1. Fenpropathrin
2. Cypermethrin
3. Lambda-cyhalothrin
4. Permethrin
5. Tau-fluvalinate

[Chemical name of active ingredient Lambda-cyhalothrin - 1a(S*),3a(Z)]-cyano(3- phenoxyphenyl)methyl-3-(2-chloro-3,3,3- trifluoro-1-propenyl)-2,2- dimethylcyclopropanecarboxylate. (Concentration: 13.1%)]

4. An insecticide active ingredient has an oral LD50 less than 10 mg/kg. What signal word must appear on the product label? [Danger Poison]

[Oral LD50 - Up to and including 50 mg/kg - Toxicity Category I - Signal Word DANGER and POISON printed in red with a skull and crossbones symbol]