Lesson eLearning

In the life cycle of the fern *Pteridium aquilinum*, the gametophyte stage is dominant. What is its ploidy level, and which phase undergoes meiosis?

medium 3 marks Class 10 · Science · How do Organisms Reproduce
Answer
haploid; sporophyte undergoes meiosis

The correct answer is haploid; sporophyte undergoes meiosis — Answer: haploid; sporophyte undergoes meiosis.

Step-by-step solution

  1. Recall alternation of generations in ferns: gametophyte is dominant and haploid.
  2. Identify that meiosis occurs during spore formation in the sporophyte phase.
  3. State that the gametophyte is haploid (n).
  4. State that the sporophyte (n+1) undergoes meiosis to produce spores.
  5. Answer: haploid; sporophyte undergoes meiosis.
Common mistake: Confusing ploidy of gametophyte or thinking sporophyte is dominant

Concept tested: Alternation of generations ploidy and meiosis

Published · How this solution was prepared and checked

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