megaspore

English - English

Definition of megaspore in English English dictionary

The larger spore of a heterosporous plant, typically producing a female gametophyte

larger of the two types of spore produced in heterosporous plants; develops in ovule into a female gametophyte

In heterosporous plants, spores that form the female gametophyte (megagametophyte) which in turn produces the egg

In plants which are heterosporous, the larger kind of spore is called a megaspore; it usually germinates into a female (egg-producing) gametophyte Contrast with microspore

A spore in heterosporous plants that gives rise to female gametophytes and is generally larger than a microspore

{i} larger of two kinds of spores; embryo sac of a flowering plant (Botany)

Related Terms

megaspore mother cell

A cell that forms four megaspores by meiosis; a megasporocyte

megaspore mother cell

A cell that undergoes meiosis to produce four megaspores. Also called megasporocyte

Hyphenation

meg·a·spore

Synonyms

macrospore

Etymology

() mega- +‎ spore