what are pre-requisit of seed habit

Heterospory and seed habit Heterosporous plants produce two sets of specialized spores: megaspores (haploid female spores) and microspores (haploid male spores). Heterospory has evolved independently in several lineages. While, Homospory is the production of same type of spores. Scientists believe that heterospory is the precursor of seed reproduction. This is known as seed habit. The…