Question

insert dashes where needed.
bioluminescent mushrooms fungi that can produce and emit light grow in the rain forests of puerto rico and brazil.

Explanation:

Dashes set off the defining appositive phrase "fungi that can produce and emit light" to clarify it describes "Bioluminescent mushrooms", separating non-essential explanatory information from the main sentence structure.

Answer:

Bioluminescent mushrooms — fungi that can produce and emit light — grow in the rain forests of Puerto Rico and Brazil.