EFO | Classes | AgroPortal

ID	http://purl.obolibrary.org/obo/PO_0025279 http://purl.obolibrary.org/obo/PO_0025279 https://agroportal.lirmm.fr/ontologies/EFO/PO_0025279 Loading
Preferred name	megagametophyte
Definitions	Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. In angiosperms, Gnetum, and Weltwischia, the megagametophyte is greatly reduced. The megagametophyte in angiosperms is an embryo sac. A whole plant in the gametophyte development stage (PO:0028003) that produces only plant egg cells (PO:0020094).

rdfs:comment	Megagametophytes in bryophytes only produce egg cells, but do not develop from megaspores, because there is no heterospory in bryophytes. In some pteridophytes, megagametophytes develop from megaspores. In angiosperms, Gnetum, and Weltwischia, the megagametophyte is greatly reduced. The megagametophyte in angiosperms is an embryo sac.
rdf:type	http://www.w3.org/2002/07/owl#Class Loading
rdfs:subClassOf	http://purl.obolibrary.org/obo/PO_0000003 Loading
rdfs:label	megagametophyte
obo_purl:IAO_0000115	A whole plant in the gametophyte development stage (PO:0028003) that produces only plant egg cells (PO:0020094).

Subject	Author	Type	Created
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