Question

In xerosere ,plant succession process,lichen and mosses are considered as pioneer group of organism.is it true statement??

Answer 1

Lichens are typically the first organisms to colonize bare rock.They are therefore the pioneerspeciesin primary succession.Many organisms require soil before they can colonize an area. Lichens that colonize bare rock secrete acids that break down the rock and start the soil-production process.

Also, as lichens die, they provide some organic matter that also contributes to soil. Mosses can then colonize the thin soil; as mosses die, the soil thickens more allowing other hardy species to colonize. The process continues until a mature forest forms, sometimes centuries later.

So ,we can say that in plant succession ,lichens and mosses are pioneer group of organism.



Hope it will help