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What are saprophytes?

  1. Bacteria that consume living organisms

  2. Nonpathogenic bacteria that live on dead matter

  3. Pathogenic bacteria that live on plants

  4. Microbes that recycle nutrients

The correct answer is: Nonpathogenic bacteria that live on dead matter

Saprophytes are nonpathogenic bacteria that live on dead matter. Option A is incorrect because it states that saprophytes consume living organisms, which is not true. Option C is incorrect because it refers to pathogenic bacteria, which are harmful to plants. Option D is also incorrect because although saprophytes do recycle nutrients, they specifically do so by breaking down dead matter, not by recycling nutrients in general.