homosporous การใช้

• The extant horsetails are homosporous, but extinct dehiscence to release the spores.
• Vascular plants that produce only one type of spore are said to be homosporous.
• In homosporous organisms, all spores look alike and grow into individuals carrying reproductive parts of both genders.
• These species reproduce by shedding spores and have macroscopic alternation of generations, although some are homosporous while others are heterosporous.
• While it is difficult to track the early evolution of seeds, the lineage of the seed ferns may be traced from the simple trimerophytes through homosporous Aneurophytes.
• Spores were found, around 50 祄 in diameter, but may have been immature; they were of one size range ( i . e . the plant was homosporous ).
• Following the characteristics of most ferns, the " Gaga " group is homosporous in nature, and produce minute spherical spores that travel and fall down on the ground.
• They are flowerless, vascular, terrestrial or isosporous, homosporous ) and are borne on the upper surface of the leaf blade of specialized leaves ( sporophylls ) arranged in a cone-like strobilus at the end of upright stems.
• Early land plants had sporophytes that produced identical spores ( isosporous or homosporous ) but the ancestors of the gymnosperms evolved complex heterosporous life cycles in which the spores producing male and female gametophytes were of different sizes, the female megaspores tending to be larger, and fewer in number, than the male microspores.