What is heterospory? Briefly comment on its significance. Give two examples.
Heterospory is a phenomenon wherein types of spores are borne through the identical plant. These spores range in size. The smaller one is called microspore and the bigger one is referred to as megaspore. The microspore germinates to shape the male gametophyte and the megaspore germinates to shape the woman gametophyte. The male gametophyte releases the male gametes and those attain the woman gametophyte to fuse with the egg. The improvement of the zygote takes region within the girl gametophyte. This retention and germination of the megaspore inside the megasporangium guarantees right improvement of the zygote. The zygote develops into the destiny sporophyte. The evolution of the seed addiction is associated with the retention of the megaspore. Heterospory is accordingly taken into consideration an crucial step in evolution as it's miles a precursor to the seed addiction. Heterospory advanced first in pteridophytes together with Selaginellaand Salvinia.
