Reproduction is in 2 modes; sexual replica and agamogenesis. Most of the fungi show agamogenesis whereas some use reproduction. agamogenesis is accomplished by the assembly of spores. vegetative spores ar created within the structures known as sporangia. Hence, sporangia ar vegetative fruitful bodies. reproduction is accomplished by the assembly of sexual cells called gametes. Gametes ar haploid, and therefore the fusion of two male and feminine gametes produces a diploid zygote, that then develops into a replacement organism. Gametes ar created within the structures known as gametangia. The key difference between sporangia and gametangia is that sporangia ar the vegetative structures that manufacture vegetative spores whereas gametangia ar the sexual structures that manufacture sexual spores or the gametes.
The flora of seeded plants is diploid and results from syngamy (fusion) of 2 gametes. The flora bears the sporangia (singular, sporangium): organs that 1st appeared within the land plants. The term “sporangia” virtually suggests that “spore in an exceedingly vessel”: it's a fruitful sac that contains spores. within the cellular sporangia, the diploid sporocytes, or mother cells, manufacture haploid spores by meiosis, wherever the 2n body variety is reduced to 1n (note that a lot of plant sporophytes ar polyploid: for instance, durum is tetraploid, bread wheat is hexaploid, and a few ferns ar 1000-ploid). The spores ar later free by the sporangia and disperse within the surroundings.
As nouns the distinction between sporangium and gametangium
 is that sporangium is (botany|mycology) a case, capsule, or instrumentation within which spores ar created by associate organism while gametangium is a gamete-producing organ or cell found in several cellular protists, alga and fungi, and within the gametophytes of plants.