What is the Difference Between Homosporous and Heterosporous Plant Life
What Is Heterospory. Web alternation of generations, also called metagenesis or heterogenesis, in biology, the alternation of a sexual phase and an asexual phase in the life cycle of an organism. The microspore germinates to form the male gametophyte and the megaspore germinates to form the female gametophyte.
What is the Difference Between Homosporous and Heterosporous Plant Life
The smaller of these, the microspore , is male and the larger megaspore is female. The two phases, or generations, are often morphologically,. Web heterospory induces a drastic reduction in the sizes of their gametophytes. 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 microspore germinates to form the male gametophyte and the megaspore germinates to form the female gametophyte. Petersen & burd, 2016 ). The smaller one is known as microspore and the larger one is known as megaspore. Web alternation of generations, also called metagenesis or heterogenesis, in biology, the alternation of a sexual phase and an asexual phase in the life cycle of an organism. Web heterospory is a type of spore formation in plants that occurs when the plant’s sporophyte produces two different kinds of spores. The smaller spore is known as a microspore which germinates to form a male gametophyte.
Web heterospory is the formation of two morphologically different spores (megaspores and microspores) from the sporophytes of pteridophytes and other seed plants. Heterospory evolved during the devonian period from isospory independently in several plant groups: There is an extreme reduction in the male gametophyte and, in most cases, it is nothing but an antheridium. Microspores and megaspores in a single plant. In heterosporous forms the differentiation of sex can be predicted at the spore stages. Web alternation of generations, also called metagenesis or heterogenesis, in biology, the alternation of a sexual phase and an asexual phase in the life cycle of an organism. The two phases, or generations, are often morphologically,. The smaller spore is known as a microspore which germinates to form a male gametophyte. Web heterospory induces a drastic reduction in the sizes of their gametophytes. The microspore germinates to form the male gametophyte and the megaspore germinates to form the female gametophyte. Examples of heterospory plants are selaginella, salvinia, and marsilea, etc.
