What are systemic pesticides primarily characterized by?

• A. Pesticides that repel pests without being absorbed
• B. Pesticides that are absorbed and transported within the pest
• C. Pesticides that are effective only on the surface of plants
• D. Pesticides that require soil application for effectiveness

Answer: (B)

Systemic pesticides are characterized by their ability to be absorbed by plants and then transported throughout their tissues. When a plant takes up a systemic pesticide, it circulates within the vascular system and can provide protection against pests that feed on any part of the plant. This internal distribution allows the pesticide to reach areas that surface treatments cannot, effectively targeting pests that may not come into contact with the applied pesticide.

This absorption and movement is what distinguishes systemic pesticides from others that may only act on the surface of the plant or repel insects rather than being taken up and utilized by the plant itself. The capacity of systemic pesticides to provide ongoing protection as they are distributed throughout the plant also enhances their effectiveness, as they can help control pests that might otherwise evade surface treatments.