Selective Pesticides are

Selective Pesticides are

• A. They affect many species
• B. They only work on certain species
• C. They must be swallowed
• D. They are always systemic

Answer: (B)

Selective pesticides are designed to affect only certain species, using differences in biology between the target pest and other organisms. That means they are effective against specific pests while sparing many non-target species. They don’t have to be swallowed—their action can be on contact, or through uptake by the plant or pest—and they aren’t always systemic; some products act locally where they contact the organism. So the idea that they only work on certain species best captures what makes a pesticide selective.

Selective pesticides are designed to affect only certain species, using differences in biology between the target pest and other organisms. That means they are effective against specific pests while sparing many non-target species. They don’t have to be swallowed—their action can be on contact, or through uptake by the plant or pest—and they aren’t always systemic; some products act locally where they contact the organism. So the idea that they only work on certain species best captures what makes a pesticide selective.