Environmental Studies · Biology

Pesticides and Pest Control

1,208 Questions

Pesticides and Pest Control focuses on the management of invasive species through chemical, biological, and cultural methods. It includes topics like integrated pest management, herbicide targets, and the ecological impacts of toxic chemicals. This subject is frequently tested in environmental science and agriculture exams.

Integrated Pest ManagementBiological Control AgentsHerbicide MechanismsChemical Pesticide ToxicityGenetic Pest ResistanceInvasive Species Management

Pesticides and Pest Control Questions

Multiple choice
  1. Carbonyl fluoride

  2. Carbonyl sulfide

  3. Cerium (III) chloride

  4. Cerium (III) bromide

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbonyl sulfide is used  as a herbicide. Carbonyl sulfide is a potential alternative fumigant to methyl bromide and phosphine. In some cases, however, residues on the grain result in flavours that are unacceptable to consumers, e.g., barley used for brewing.

Multiple choice
  1. N,N-Diethyl-meta-toluamide

  2. Icaridin

  3. Indulines

  4. Citronella oil

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Indulines are a series of dyestuffs of blue, bluish-red or black shades, formed by the interaction of para-amino azo compounds with primary monoamines in the presence of a small quantity of a mineral acid. These are not the insect repellents .

Multiple choice
  1. phosphorus pentasulfide

  2. phosphorus pentoxide

  3. phosphorus sesquisulfide

  4. phosphorus triiodide

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phosphorus pentasulfide is an inorganic compound with the formula P4S10. This yellow solid is the one of two phosphorus sulfides of commercial value. Samples often appear greenish-gray due to impurities. It is also used in the production of pesticides such as Parathion and Malathion.

Multiple choice
  1. Methyl chloroformate

  2. Methyl cyanoformate

  3. Methyl methanesulfonate

  4. N-Methylmorpholine-N-oxide

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Methyl cyanoformate is the organic compound with the formula CH3OC(O)CN. This colourless liquid is used as a reagent in organic synthesis as a source of the methoxycarbonyl group. It is also an active ingredient in the pesticide product Zyklon A. It is also known as Mander's reagent.

Multiple choice
  1. Green manure

  2. Compost

  3. Biological pest control

  4. Genetically modified organisms

  5. Pyrethrins

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Depending on whose definition is used, organic farming uses fertilizers and pesticides (which include herbicides, insecticides and fungicides) if they are considered natural (such as bone meal from animals or pyrethrin from flowers), but it excludes or strictly limits the use of various methods (including synthetic petrochemical fertilizers and pesticides; plant growth regulators such as hormones; antibiotic use in livestock; genetically modified organisms; human sewage sludge; and nanomaterials.)

Multiple choice
  1. Weeds compete with productive crops or pasture.

  2. Onions are most vulnerable to weeds.

  3. Weeds have the same competitive abilities irrespective of the farm conditions and season.

  4. Weeds can also host pests.

  5. Insect pests often do not attack weeds.

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Weeds also vary in their competitive abilities and according to conditions and season. Tall-growing vigorous weeds such as fat hen (Chenopodium album) can have the most pronounced effects on adjacent crops, although seedlings of fat hen that appear in late summer produce only small plants.

Multiple choice
  1. Allethrins

  2. Bifenthrin

  3. Cypermethrin

  4. Cyfluthrin

  5. Permethrin

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Allethrins are synthetic pyrethroids. The compounds have low toxicity for humans and birds and are used in many household insecticides such as RAID and mosquito coils.

Multiple choice
  1. Equanil

  2. BHC

  3. DDT

  4. Malathion

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Equanil (meprobamate) is a tranquilizer/sedative used to treat anxiety and tension. BHC, DDT, and Malathion are all pesticides used to kill insects and other pests. The question asks which is NOT a pesticide, making Equanil the correct answer.

Multiple choice
  1. fungicide

  2. herbicide

  3. insecticide

  4. analgesic

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

DDT (Dichlorodiphenyltrichloroethane) is a synthetic insecticide used to control mosquitoes and other insect populations, not fungi, weeds, or pain.

Multiple choice
  1. They kill insects, their eggs and larvae without affecting the crop.

  2. They cause diseases in crop plants.

  3. They cause heavy loss to crop plants.

  4. All of the above

  5. Options (1) and (2)

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Insecticides kill insects, their eggs and larvae without affecting the crop.

Multiple choice
  1. They kill insects, their eggs and larvae without affecting the crop.

  2. They cause diseases in crop plants.

  3. They cause heavy loss to crop plants.

  4. They can be controlled by pesticides.

  5. Options (2) and (4)

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

These are correct statements.