300+ TOP Pest Control MCQs and Answers Quiz Exam

Pest Control Multiple Choice Questions

1. Pesticides disturb the ecosystem by eliminating the

A. Organisms that protect the environment
B. Organisms which forms the food chain
C. Micro-organism of crop
D. None of these

Answer: B

Explanation: Pesticides can eliminate some animals’ essential food sources, causing the animals to relocate, change their diet or starve.

2. First pesticide used by man is

A. Rotenone
B. Thuricide
C. Pyrethrin
D. Pheromone

Answer: D

Explanation: Pheromones were the first pesticides used by man.

3. A transgenic crop that is resistant to hornworm larvae is

A. Sugarcane
B. Sunflower
C. Tomato
D. Tobacco

Answer: C

Explanation: Transgenic crops are crops having genes of smoother crops, pest and herbicide resistance e.g. transgenic tomato (against hornworm larvae).

4. IPM stands for

A. Integrated Pest Management
B. International Plant Management
C. International Population Management
D. Integrated Plant Management

Answer: A

Explanation: Integrated pest management (IPM), also known as integrated pest control (IPC), is a broad-based approach that combines practices for pest control that is both cost-effective and environmentally friendly.

5. The earliest pesticide was

B. Nicotine
C. Pyrethrum
D. Margosa

Answer: D

Explanation: One of the earliest pesticides which were used by man was margosa (neem) leaves. The dried leaves repel the pests from stored grains.

6. Biological control of pests is

A. Highly expensive
B. Self perpetuating
C. Toxic
D. Polluting

Answer: B

Explanation: Biological methods for preventing plant pests and diseases are termed Biological control. This is the most effective and the best way to reduce pests naturally.

7. First bioinsecticide developed on commercial scale was

A. Organophosphates
B. Quinine
D. Sporeine

Answer: D

Explanation: The First bioinsecticide developed on a commercial scale was Sporeine.

8. When a natural predator living being applied on the other pathogenic organisms to control them, this process is called

A. Confusion Technique
B. Biological Control
C. Genetic Engineering
D. Artificial Control

Answer: B

Explanation: The control of insect pests by the introduction, encouragement and artificial increase of biological agencies like predaceous and parasitic insects, other animals and diseases is termed as Biological Control.

9. The pesticides are the chemicals that kill

A. Insects
B. Mites
C. Weeds
D. All of these

Answer: D

Explanation: Pesticides are chemical compounds that are used to kill pests, including insects, rodents, fungi and unwanted plants (weeds).

10. Which is a microbial insecticide?

A. brevis
B. polymixa
C. Bacillus thuringiensis
D. subtilis

Answer: C

Explanation: The correct answer is Bacillus thuringiensis. Bacillus thuringiensis is a gram-positive, soil-dwelling bacterium. It is commonly used as a biological pesticide.

11. Which one is an effective plant insecticide?

A. Cinerin
B. Nicotine
C. Pyrethrin
D. All these

Answer: B

Nicotine is extracted from tobacco or related Nicotiana species. This compound serves as a good natural insecticide of vegetable origin whereas Pyrethrum and cinerin (pyrethroids) are obtained from the dry inflorescence of Chrysanthemum cinerariifolium. Pyrethrin is also used in fly sprays, aerosols, mosquito coils etc. to kill them.

12. DDT was first synthesized by

A. Michael Faraday
B. Paul Muller
C. Schrader
D. Othnar Zeidler

Answer: B

Explanation: DDT, prepared by the reaction of chloral with chlorobenzene in the presence of sulfuric acid, was first made in 1874; its insecticidal properties were discovered in 1939 by a Swiss chemist, Paul Hermann Müller.

13. The pesticides used in killing the aquatic pests (including insects) is

A. Kerosene oil
D. crude oil

Answer: A

Explanation: By the spraying of kerosine oil on the surface of water bodies, larva and pupa of insects can not live due to the lack of breathing.

14. Thurioside is

A. Weedicide
B. Insecticide
C. Fungicide
D. Antibiotic

Answer: B

Explanation: The correct answer of this is option a, insecticide. It is a bacteria which is used and cultivated for the production of organic insecticide substances.

15. Third generation pesticides are

A. Insect hormone analogues
B. Insect repellents
C. Pheromones
D. Pathogens

Answer: B

Explanation: First generation pesticides included the organic and inorganic molecules. Second generation pesticides were the insecticides including DDT, chlorinated hydrocarbon, carbamates and organophosphates. Third generation pesticides are far superior to the lead arsenate and DDT that epitomize the two earlier generations. These chemicals are called juvenile hormones which are made in two small glands in insects’ heads. Juvenile hormone must be secreted at certain stages in an insect’s life and not secreted at other times.

16. Houseflies and mosquitoes have become resistant to the

A. Malathion
D. Aldrin

Answer: C

Explanation: DDT has become ineffective for killing mosquitoes and houseflies because of the development of adaptive resistance.

17. The phenomenon of using a predator for controlling a pest is

A. Artificial control
B. Confusion technique
C. Biological control
D. Genetic engineering

Answer: C

Explanation: Biological control: It is a method to control the pest by using other organisms as predators. The predators that are used are insects, mites, weeds etc.

18. Nobel prize was awarded to Paul Muller on the discovery of which of the following pesticides

B. Parathion
C. Malathion
D. Pyrethrum

Answer: A

Explanation: DDT insecticidal value was discovered by paul muller in 1939 and got Nobel prize.

19. What is the main problem caused by the use of pesticides?

A. They deform the gills of some fishes
B. They kill silkworm
C. Mosquitoes have become resistant to DDT
D. Their residues persists in water and other components of the environment

Answer: D

Explanation: The main problem caused by the use of pesticides is that their residues persist in water and other components of the environment as they are not easily degraded in the environment.

20. Pesticide is

A. Food grain preservative
B. Insect killer
C. Insect killer and food grain preservative
D. Fungus killer

Answer: B and D both

Explanation: Pesticides are chemicals that repel or destroy weeds, fungus, pathogens and other pests.

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