ocr: LICHENS LICHEN is really two organisms organisms cannot survive. They can A living closely together. These are grow on bare rocks in the hottest a fungus and a green alga (a plantlike deserts and in the freezing conditions protist). The alga makes food fori itself ofthe Arctic and Antarctic. and the fungus by photosynthesis. The fungus passes on water and Lichen Spore-producing mineral salts to the alga. It also body protects the lichen and anchors it to whatever itis growing on. This partnership where both organisms benefitis called symbiosis. Lichens can live where most other Lichen This lic ...