Contact pesticides are defined as:

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Multiple Choice

Contact pesticides are defined as:

Explanation:
This item tests your understanding of how pesticides act on pests. Contact pesticides act on the parts of the pest they touch and are absorbed at the surface they contact, so they kill only those areas that come into contact with the product. That is exactly what the statement describes: pesticides that kill only the parts touched and are absorbed through external surfaces. This concept contrasts with systemic pesticides, which are taken up by the plant and move to other tissues; pesticides that must be swallowed to work; and pesticides applied before planting.

This item tests your understanding of how pesticides act on pests. Contact pesticides act on the parts of the pest they touch and are absorbed at the surface they contact, so they kill only those areas that come into contact with the product. That is exactly what the statement describes: pesticides that kill only the parts touched and are absorbed through external surfaces. This concept contrasts with systemic pesticides, which are taken up by the plant and move to other tissues; pesticides that must be swallowed to work; and pesticides applied before planting.

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