00:01
This question is asking us about which group of fungi or fungi -related organisms break down rocks.
00:10
And the answer is d, lichens.
00:16
So lichens are a mutualism, a mutually beneficial relationship between fungi and algae.
00:30
And they live together as kind of like one organism.
00:35
If you see a lichen on a rock, you don't go, oh, that's many different organisms living together.
00:41
It actually looks like just one organism.
00:44
And because it's a mutualism, both parties benefit and both parties contribute.
00:50
So the algae do photosynthesis and can contribute sugars to the fungi.
01:02
So that gives the fungi some energy...