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reproductive differences of seedless and seeded plants . Homospory vs heterospory

reproductive differences of seedless and seeded plants .
Homospory vs heterospory

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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

gladiator answered 1 year ago
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