Given a scientific question, generate a correct answer to it.

[EX Q]: What is a close relationship between two species in which at least one species benefits called?
[EX A]: symbiosis

[EX Q]: Flatworms reproduce sexually. in most species, the same individuals produce both what?
[EX A]: eggs and sperm

[EX Q]: Fungi are no longer classified as what, possessing cell walls made of chitin rather than cellulose?
[EX A]:
plants