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Question

Lichens grow at a very slow rate (1 mm per year). In how many years, a lichen matures?
  1. 1 - 4 years
  2. 4 - 8 years
  3. 100 years
  4. 20 - 25 years

A
20 - 25 years
B
1 - 4 years
C
4 - 8 years
D
100 years
Solution
Verified by Toppr

Lichens usually reach maturity and produce ascocarps at 4-8 years of age. The age of some lichens in alpine-arctic area is 1000-4500 years. Their longevity can be partially attributed to their ability to survive long periods of drought unharmed.
Thus, the correct answer is option B.

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