Megaspores, also called macrospores, are a type of spore that is present in heterosporous plants. These plants have two spore types, megaspores and microspores...

A megaspore mother cell, or megasporocyte, is a diploid cell in plants in which meiosis will occur, resulting in the production of four haploid megaspores...

the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center. The female gametophyte — specifically termed a megagametophyte...

megagametogenesis, the megaspore, which arises from megasporogenesis, develops into the embryonic sac, in which the female gamete is housed. These megaspores then develop...

generations. The spores of seed plants are produced internally, and the megaspores (formed within the ovules) and the microspores are involved in the formation...

megaspores are dispersed from sporangia either passively or by active ejection. Microspores produce microgametophytes which produce sperm. Megaspores...

plants. The smaller of these, the microspore, is male and the larger megaspore is female. Heterospory evolved during the Devonian period from isospory...

undergoes meiosis, producing four haploid megaspores. Only one of the four resulting megaspores survives. This megaspore undergoes three rounds of mitosis, resulting...

are the male cells; they are borne in the stamens. The female cells, megaspores, divide to become the egg cell. They are contained in the ovule and enclosed...

female spore is considerably larger than a male spore, it is termed a megaspore. Azolla has microscopic male and female gametophytes that develop inside...