PPT Plants & Life Cycles PowerPoint Presentation ID6580360
What Is Heterospory. The megaspores are the bigger spores that produce a female gametophyte and the microspores are the smaller ones that produce a male gametophyte. The smaller of these, the microspore , is male and the larger megaspore is female.
PPT Plants & Life Cycles PowerPoint Presentation ID6580360
The clubmosses , the ferns including the arborescent. There is an extreme reduction in the male gametophyte and, in most cases, it is nothing but an antheridium. The smaller of these, the microspore , is male and the larger megaspore is female. Microspores and megaspores in a single plant. The microspore germinates to form the male gametophyte and the megaspore germinates to form the female gametophyte. The smaller spore is known as a microspore which germinates to form a male gametophyte. Web heterospory is a phenomenon in which two kinds of spores are borne by the same plant. These microspores and megaspores are formed respectively within microsporangia and megasporangia which in turn are borne on two distinct sporophylls called microsporophylls and megasporophylls respectively. The megaspores are the bigger spores that produce a female gametophyte and the microspores are the smaller ones that produce a male gametophyte. It is defined as the production of two spores that are different in size in the same plant.
Web heterospory is the production of spores of two different sizes and sexes by the sporophytes of land plants. Microspores and megaspores in a single plant. The microspore germinates to form the male gametophyte and the megaspore germinates to form the female gametophyte. Web heterospory is a phenomenon in which two kinds of spores are borne by the same plant. The megaspores are the bigger spores that produce a female gametophyte and the microspores are the smaller ones that produce a male gametophyte. The smaller one is known as microspore and the larger one is known as megaspore. Petersen & burd, 2016 ). In heterosporous forms the differentiation of sex can be predicted at the spore stages. These spores differ in size. The smaller of these, the microspore , is male and the larger megaspore is female. The female gametophyte never outgrows the limits of the megaspore.
