Assertion : In primary succession on rocks these are usually lichens are pioneer species which are able to secrete acids to dissolve rock, helping in weathering and soil formation. Reason : Lichens replaced by small plants like bryophytes, and then bigger plants, and after several more stages, ultimately a stable climax forest community is formed.
- AAssertion and reason both are true and the reason is correct explanation of assertion.
- BAssertion and reason both are true but reason is not correct explanation of assertion.
- CAssertion is true but reason is wrong.
- DAssertion and reason both are wrong.
✓ Correct answer: B
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