Heterospory and Plant Evolution — NEET Biology
📚 Practice ConceptWhat is heterospory? Briefly comment on its significance. Give two examples.
Which of the following statements regarding heterospory and its significance in pteridophytes are correct? S1: Heterospory refers to the production of two distinct types of spores: microspores and megaspores. S2: In heterosporous pteridophytes, megaspores develop into male gametophytes, and microspores develop into female gametophytes. S3: The retention of the female gametophyte on the parent sporophyte is a crucial step towards the evolution of the seed habit. S4: Selaginella is an example of a heterosporous pteridophyte that exhibits characteristics leading to the seed habit. S5: The development of the zygote into a young embryo within the female gametophyte is considered a precursor to the seed habit. S6: All pteridophytes are heterosporous, making them the first true seed-producing plants.
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