NEET Previous Year Question

Selaginella and Salvinia are considered to represent a significant step towards the evolution of seed habit because

Topic: NEET PYQ

Answer: D. Full step-by-step solution below.

  1. AFemale gametophyte is free and gets dispersed like seeds.
  2. BFemale gametophyte lacks archegonia.
  3. CMegaspores possess endosperm and embryo surrounded by seed coat.
  4. DEmbryo develops in the female gametophyte which is retained on parent sporophyte.

Correct answer: D

Solution

(d) This is a critical evolutionary step because the retention of the female gametophyte on the parent plant for a variable period provides nourishment and protection to the developing embryo, mimicking the condition seen in seed-bearing plants.

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