In: Biology
HOMOSPORY | HETEROSPORY |
occurs in seedless vascular plants and bryophytes | occurs in seeded plants and some pteridophytes |
germination of the homospore produces single type of gametophyte , which is bisexual | germination of the megaspoer produces female gametophyte and germination of the microspore produces the male gametophyte |
homospores plants do not produce seeds | heterosporous plants produce generally seeds |
occurs in primitive plants | occurs in more complex plants |
production of a single kind of spore , neither microspore nor megaspore | production of two types of spores differing in size and sex, male microspore and female megaspore |
sex differentiation occurs at the gametophytic stage | sex differentiation occurs at the sporophyte stage |
self fertilisation is prominnent in homosporous plants | cross fertilisation is prominent |
embryo obtains nutrients from the green prothallus | embryo obtains nutrients from the endosperm in angiosperm and from the female gametophyte in gymnosperm |