Most fungi obtain nutrients from dead plants and animals. These fungi are called _____.Group of answer choicesdimorphicparasitessubstratesnonseptatesaprobes

The most appropriate term to fill in the blank is "saprobes."

Explanation:

1. Definition of Saprobes: Saprobes (or saprophytic fungi) are organisms that obtain their nutrients from dead organic matter. This includes decaying plants and animals.

2. Role in Ecosystem: These fungi play a crucial role in decomposition, recycling nutrients back into the ecosystem, and maintaining environmental balance.

3. Other Options:

   • Dimorphic: Refers to fungi that can exist in two different forms, typically yeast and mold.
   • Parasites: These obtain nutrients from living organisms, often harming the host.
   • Substrates: This term refers to the surface or material on which an organism grows, not a type of organism.
   • Nonseptates: Refers to a type of hyphae that does not have septa (walls) separating the cells, but it does not define how they obtain nutrients.

In conclusion, the correct answer is saprobes.