What is the concentration of a toxicant that kills 50% of the exposed organisms called?
Correct answer B. LC50
Subject / 2,686 questions
Agriculture MCQs
Page 97 of Agriculture multiple-choice questions with answers. Tap an option to check yourself.
Page 97 of 135
What does the term toxicant refer to?
Correct answer B. Poisonous material
What is the material used to dilute the active ingredient of a pesticide called?
Correct answer C. Carrier
Advertisement
What is a substance added to a pesticide to improve the qualities of its formulation called?
Correct answer C. Adjuvant
A chemical that inhibits the blood’s clotting mechanism produces which kind of poisoning?
Correct answer C. Chronic poisoning
What is a chemical that causes plants to shed their leaves called?
Correct answer D. Defoliant
What is the antidote for anticoagulant rodenticides?
Correct answer B. Vitamin K
What is the antidote for organophosphate and carbamate poisoning?
Correct answer A. Atropine
Which colour band on a pesticide label indicates a moderately hazardous product?
Correct answer C. Blue
Advertisement
What is a mixture of active and inert ingredients called?
Correct answer B. Formulation
What type of pesticide is absorbed into the host’s system and kills the pest without harming the host?
Correct answer C. Systemic
What are chemicals applied beforehand to stop a pest from causing damage called?
Correct answer B. Protectant
Which items are required for the safe application of pesticides?
Correct answer D. All of the above
What is a pesticide mixture called when its components reduce each other’s effectiveness?
Correct answer B. Antagonistic mixture
What is a volatile chemical called that exists as a gas in high enough concentration to kill a given pest?
Correct answer C. Fumigant
Advertisement
Which of the following are examples of inorganic pesticides?
Correct answer C. Calcium cyanide, boric acid
What is a chemical used to control mites called?
Correct answer B. Acaricide
What is a chemical used to kill birds called?
Correct answer B. Avicide
Which ingredient is added to a pesticide to support and maintain the effectiveness of the active ingredient?
Correct answer A. Inert ingredient
Aphid lions are predators of which pest?
Correct answer C. Aphid