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 zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

BHC and DDT belong to which class of pesticides?

  1. Organophosphates

  2. Organochlorines

  3. Carbonates

  4. Triazines
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Organochlorine pesticides are chlorinated hydrocarbons used in agriculture and mosquito control. Representative compounds in this group include DDT, ethoxychlor, dieldrin, chlordane, toxaphene, mirex, kepone, lindane and benzene hexachloride

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which one among the following, is likely to have the highest levels of DDT deposition in its body?

  1. Seagull

  2. Crab

  3. Eel

  4. Phytoplankton
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Because of DDTs chemical properties, it has the tendency to accumulate in animals. As animals lower on the food chain are eaten by other animals higher up, DDT becomes concentrated in the fatty tissues of the predators. This continues until reaching the primary predator of the food chain, who receives the highest dose of DDT. In food chain seaweed-limpet - crab - seagull, Sea gulls are the predators and snatch the top position of food web.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which of the following pesticides is an acetyl cholinesterase inhibitor?

  1. Aldrin

  2. Y-BHC

  3. Endosulfan

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

Malathion is an organophosphate insecticide. It interferes with the nervous system by blocking an enzyme acetyl cholinesterase that normally acts as an off switch by ending the signal. Without the enzyme, the nerve keeps firing and eventually the nervous system fails. Malathion is used both in agricultural and residential settings.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

What type of poison is an ethylene dichloride?

  1. Stomach poison

  2. Contact poison

  3. Fumigant

  4. Biological control
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fumigants are volatile and poisonous substances used to kill insects, nematodes that damage stored foods or seeds, human dwellings, clothing, and nursery stock. Ethylene dichloride is used to treat open storage areas and as soil fumigants. It is a low-pressure compound which diffuses more slowly.

Thus, the correct answer is option C.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Nobel prize was awarded to Paul Muller, on the discovery of which of the following pesticides?

  1. Malathion

  2. Parathion

  3. Pyrethrum

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

Paul Muller also known as Pauly Mueller was a Swiss chemist who received the 1948 Nobel prize in Physiology or Medicine for his 1939 discovery of insecticidal qualities and use of DDT in the control of vector diseases, such as malaria and yellow fever.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

2, 4 - D is an effective

  1. Insecticide

  2. Herbicide

  3. Fungicide

  4. Rodenticide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

2,4-D is one of the more useful herbicides. This herbicide is selective for broad leaf weeds. This makes it useful to control such weeds as dandelions, plantains, knotweed, pigweed, and many others. It is a systemic herbicide, which means that it is absorbed into the plant tissue and transported throughout the plant, including into the root system.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which one is not matched?

  1. Organochlorine - DDT

  2. Pyrethroid - Atrazine

  3. Organophosphate - Malathion

  4. Carbamate - Carbofuran
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pyrethroids are a class of synthetic pesticides used widely in home insect - control products, including flea bombs, roach sprays, ant bait, flea - and - tick pet shampoos, and lice shampoos. Examples of pyrethroid pesticides include: cypermethrin, permethrin, deltamethrin, bifenthrin, and cyfluthrin.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

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

  1. Their residues persists in water and other components of the environment.

  2. Mosquitoes have become resistant to DDT.

  3. They kill silkworm.

  4. They deform the gills of some fishes.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Pesticides are substances or a mixture of substances of chemical or biological origin, used by human society to mitigate or repel pests such as bacteria, nematodes, insects, mites, mollusks, birds, rodents, and other organisms that affect food production or human health. A major problem with the use of pesticide has been that they do not breakdown in the environment, but remain toxic to fish, animals, and humans for many years.
Thus, the correct answer is option A.
Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

The pesticide used in foundations of buildings for preventing termite attack is

  1. DDT

  2. BHC

  3. Aldrin

  4. Endosulfan
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aldrin is a pesticide used to control soil insects such as termites, corn rootworm, wireworms, rice water weevil and grasshoppers. It has been widely used to protect crops such as corn and potatoe and has been effective to protect wooden structures from termites.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Which pesticide is a herbicide?

  1. Malathion

  2. Lindane

  3. BHC
  4. $2, 4$-D
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

2,4-D (2,4-Dichlorophenoxyacetic acid) is a systemic herbicide that affects the specifically acts on the dicot weeds. It is used in the crop field of cereals to wipe out the weeds without affecting the monocot cereals. 

A. Malathion is an organophosphate insecticide.
B. Lindane is a hexachlorocyclohexane insecticide.
C. BHC (β-Hexachlorocyclohexane) or lindane is an insecticide.
D. 2,4-D is a herbicide.
Hence, the correct answer is '2,4-D'.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

Allethrin is

  1. Fertilizer

  2. Herbicide

  3. Growth hormone

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

Allethrin is a synthetic pyrenoid used as an insecticide. These were made in 1949 and their chemical structure bears similarity to the natural pyrenoids obtained from the chrysanthemum plants. These are used to kill the flying and crawling insects in homes and workplaces.

Hence, the correct answer is 'Insecticide'.

Multiple choice zoology soil pollution industrial chemicals and their harmful effects toxic wastes and their effects soil pollution-causes

The most widely used pesticides function by disrupting

  1. neurological cellular function

  2. endocrine function

  3. molecular events

  4. renal function
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Most synthetic insecticides, such as organophosphates and carbamates, function by inhibiting acetylcholinesterase, which disrupts the normal transmission of nerve impulses in the target pest's nervous system.