Given a statement, generate a question such that the answer is contained in that statement.

[Q]: Small-sized viviparous mammals evolved by Jurassic times.
[A]: When did small-sized viviparous mammals evolve?


[Q]: Moss plants are bryophytes
[A]: What type of plants are Moss plants?


[Q]: fungi produce poisons in ecosystems
[A]:
What produce poisons in ecosystems?