Question

When did lichens first appear on earth?

Answer 1

Lichens:

1. Lichen-forming fungi first evolved around 250 million years ago, on average long after plants were rooted on land.
2. The fungal part is called mycobiont and the non-fungal part is called photobiont which contains chlorophyll.
3. Many lichen partners also include one photobiont & one mycobiont that is not universal & there are lichens with more than one photobiont partner.