you have to do it yourself because I haven read the story.
Diecisiete millones seiscientos trece mil cuatrocientos catorce
Puedes ser mas especifico?
Answer:
Origin of Heterospory:
The fossil evidence indicates that some sporangia of the plant contained both small and large spores, though the size differences are not so pronounced. So a single sporangium contained both microspores and megaspores. At a later period, the microsporangia and megasporangia might have been differentiated.
