Bryophyte Life Cycle and Adaptations · NCERT Biology

Mosses are ecologically significant because they:

  1. They are the primary commercial source of timber.
  2. They are the first organisms to colonize bare rocks along with lichens.
  3. They can fix atmospheric nitrogen directly within their leaves.
  4. They produce large seeds that serve as food for birds.
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Correct answer: They are the first organisms to colonize bare rocks along with lichens.

Mosses and lichens are pioneers in plant succession on bare rocks. They decompose rocks, making the substrate suitable for the growth of higher plants.

Difficulty: Medium Question 15 of 20

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