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All of the following are examples of antimicrobial pesticides except?

  1. Algaecide

  2. Bactericide

  3. Fungicide

  4. Larvicide

The correct answer is: Algaecide

Algaecide is incorrect because it is used to kill or control algae, not microbes. The term "antimicrobial" specifically refers to substances used to kill or inhibit the growth of microorganisms such as bacteria, fungi, and viruses. Algaecides are used to control plant-like organisms, not microorganisms.