The megagametophyte of the gymnosperms is homologous to the megaprothallium (n) of the ferns and is sometimes called primary endosperm (n). The megagametophyte of seed plants is retained and nourished by the parent plant within the ovule. Ovule = megagametophyte + megasporangium (nucellus) + integument (seed coat). The megagametophytes of the gymnosperms produce several archegonia (n) with egg cells (n). Fertilization by the sperm from the pollen grain (microgametophyte, male gametophye, n) often leads to the development of several embryos (2n) within a single ovule. Polyembryony of gymnosperm seeds is a known phenomenon.
An alderman is a member of a municipal assembly or council in many jurisdictions founded upon English law. The term may be titular, denoting a high-ranking member of a borough or county council, a council member chosen by the elected members themselves rather than by popular vote, or a council member elected by voters.
adjective. The definition of operative is in force, functioning or having control, or refers to something that has the most significance or the greatest importance. 1  When a new solar-powered car is now functioning and runs successfully, this is an example of a situation where the car is operative. When a law is in place banning watering your lawn, this is an example of a time when the water ban is operative. 2  When you want to emphasize that someone is reallyvery wealthy, this is an example of a situation where you might say the operative word is rich..