First slide

Bryophytes

Question

Lichens are ecologically important as

Easy

A

they are source of some medicines
B

are pioneers of succession on barren rocks (Lithosere)
C

are symbionts of algae and fungi
D

are associated with mycorrhizal roots

Solution

Mosses along with lichens are the first organisms to colonise rocks and hence, are of great ecological importance. They decompose rocks making the substrate suitable for the growth of higher plants. Since mosses form dense mats on the soil, they reduce the impact of falling rain and prevent soil erosion.

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