Organisms And Population Question 260
Question: The early settlers on a barren area are [NCERT 1980]
Options:
A) Ferns
B) Mosses
C) Lichens
D) Diatoms
Show Answer
Answer:
Correct Answer: C
Solution:
Lichens are the early settlers on a barren area because they can tolerate desiccation heating during summer noon or excessive cooling during winter nights.
They secrete lichen acids and carbonic acid.
The acids slowly corrode rock surface and release minerals required for proper growth of lichens.
BETA
