feature mega micro
size large small
produce megaspore, microspores
female gametophyte male gametophyte
no.pf spores 4 megaspores numerous microspores
Conidia are fungus spores. Macrocnidia means that the fungus spores are complex and large. Microconidia are fungus spores that are smaller.
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A sporophyll is a leaf that bears sporangia. Both microphylls and megaphylls can be sporophylls. In heterosporous plants, sporophylls (whether they are microphylls or megaphylls) bear either megasporangia (and thus are called megasporophylls), or microsporangia (microsporophylls). The overlap of the prefixes and roots makes these terms a particularly confusing subset of botanical nomenclature
microsporangia
female cones
Megasporangia are structures that produce megaspores, which are involved in the formation of female gametophytes in seed-producing plants such as gymnosperms and angiosperms. Megasporangia are typically located within the ovules of the plant's reproductive structures, where they develop into megagametophytes during the process of seed formation.
The stamen, or to be more specific, the microsporangia.
Heterosporous plants are those that produce two types of spores that differ in size and sex. In particular, they produce two morphologically distinct types of sporangia (megasporangia and microsporangia) that create two distinct types of spores (megaspores and microspores). The spores then develop into separate male and female gametophytes. They are different from homosporous plants in which the sporophyte produce a single type of sporangium and then a single type of mother spore cell.
Microsporangia in the anther lobe of the stamen
Selagenella is heterosporous and it produces both micro- & megaspores in its micro- and megasporangia.
The stamen, or to be more specific, the microsporangia.
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