Environmental Studies · Biology

Pesticides and Pest Control

1,236 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

Which of the following is a vital component of mosquito coils?

  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

Which of the following is not a pesticide?

  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

DDT is an example of

  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

Which of the following statements is/are correct about insecticides?

  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

Which of the following statements is/are correct about pests?

  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.

Multiple choice

DDT is�

  1. Biodegradable pollutant

  2. Green house gas

  3. Non-degradable pollutant

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

DDT is a synthetic pesticide that persists in the environment for decades, bioaccumulates in fatty tissues, and biomagnifies through food chains, earning its classification as a non-degradable or persistent organic pollutant.

Multiple choice

Tetraethyl lead is used as

  1. mosquito repellent

  2. pain killer

  3. fire extinguisher

  4. petrol additive
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Tetraethyl lead (TEL) was historically added to petrol as an anti-knocking agent to improve engine performance by preventing premature fuel combustion. It works by increasing the octane rating of gasoline, allowing for smoother engine operation. The other options are incorrect because TEL is not used as a mosquito repellent, pain killer, or fire extinguisher.

Multiple choice

Which of the following sets represents natural insecticides obtained from plants?

  1. Pyrethrum, Carbaryl, Malathion

  2. Azadirachtin, Roatenone, Carbaryl

  3. Roatenone, Pyrethrum, Endosulphan

  4. Carbaryl, Endosulphan, Lindane

  5. Azadirachtin, Roatenone, Pyrethrum
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Azadirachtin is a natural insect repellent obtained from Azadirachta indica (Neem). Roatenone is a powerful insecticide obtained from roots of Derris elliptica and Lonchocarpus spp. Pyrethrum is a contact insecticide obtained from the plant Chrasanthemum cinerariaefolium.

Multiple choice

Pesticides are used to destroy:

  1. Harmful fungi

  2. Poisonous Plants

  3. Insects

  4. Micro-organisms
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pesticides are chemicals primarily used to eliminate insects that damage crops or spread disease. While some pesticides can affect fungi and microorganisms, their main target is insect pests that destroy agricultural produce.

Multiple choice

With reference to Neem tree, consider the following statements:

  1. Neem oil can be used as a pesticide to control the proliferation of some species of insects and mites.
  2. Neem seeds are used in the manufacture of biofuels and hospital detergents.
  3. Neem oil has applications in the pharmaceutical industry.

Which of the statements given above is/are correct?

  1. 1 and 2 only

  2. 3 only

  3. 1 and 3 only

  4. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the given statements are important applications of neem plant.