Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Input: Consider Input: Some gametophytes develop underground and form mycorrhizal associations with fungi.

Output: Some gametophytes develop underground and form mycorrhizal associations with what?

Input: Consider Input: Fungi is the major cause of disease in agricultural crops.

Output: What is the major cause of disease in agricultural crops?

Input: Consider Input: In a few species, chloroplast genes are inherited only from sperm.
Output: In a few species, chloroplast genes are inherited only from what?