Final answer:
Insecticide on plants enters insects through ingestion, residual contact, and systemic absorption.
Explanation:
Insecticide on plants gets into insects mainly through different routes of exposure:
- Ingestion: Insects consume parts of the plant treated with insecticide.
- Residual contact: Insects come into contact with the insecticide residue left on the plant surface.
- Systemic absorption: Some insecticides are absorbed by the plant and circulate within its tissues, reaching insects that feed on the plant.
Learn more about Insecticide exposure pathways to insects here:
https://brainly.com/question/41246790
