Your guess
Who is the fly agaric more closely related to?
Eating instead of sunlight
Fungi can't photosynthesize. Like animals, they have to feed on organic matter. And they store reserves the way we do: as glycogen. Plants store starch instead.
Chitin, like a beetle
The cell walls of most fungi contain chitin. The substance doesn't occur in plants – but it is the main component of the shells of insects, crabs and spiders.
A common ancestor
The common ancestor of fungi and animals was probably a single cell with a flagellum. The traces are still visible: the spores of some fungi swim with a single flagellum at the rear – just like the sperm of most animals.
