Study for the Ontario Pesticide Training and Certification CORE Test. Prepare with multiple-choice questions, get hints and explanations. Ensure readiness for your certification!

Multiple Choice

LD50 is defined as:

LD50 is the dose that kills 50% of test animals. It’s a median lethal dose used in toxicology to compare how toxic a substance is, typically expressed as mg of substance per kg of body weight and defined for a specific route of exposure. The best description is the one that states the dose that kills half of the animals, without tying it to a particular route or condition. The other choices specify ingestion, inhalation, or exposure to light, which aren’t part of the standard definition of LD50.

LD50 is the dose that kills 50% of test animals. It’s a median lethal dose used in toxicology to compare how toxic a substance is, typically expressed as mg of substance per kg of body weight and defined for a specific route of exposure. The best description is the one that states the dose that kills half of the animals, without tying it to a particular route or condition. The other choices specify ingestion, inhalation, or exposure to light, which aren’t part of the standard definition of LD50.