Due to this, spores can survive for a long time. Each spore is covered by a hard, protective coat to withstand unfavourable conditions şuch as high temperature and low humidity. As the spores are very light, they keep floating in air and carried over large distances by air. When the spore case of the plant bursts, then the spores spread into air. In the spore formation method of reproduction, the parent plant produces hundreds of tiny spores in spore cases. Spores are the asexual reproductive bodies. This break up of the filamentous body of Spirogyra brings about its asexual reproduction. When Spirogyra becomes mature, its filament (body) simply breaks into two or more fragments on its own, and each fragment then grows into a new Spirogyra. Spirogyra reproduces by the asexual method of reproduction called fragmentation. Spirogyra is a green, filamentous alga plant which is found in ponds, lakes and slow moving streams. So, when water and nutrients are available, algae grow and multiply rapidly by the process of fragmentation.Īn example of common alga is Spirogyra. This process of reproduction of alga by fragmentation continues due to which a large number of algae are produced in a short period of time which cover a large area of water in the pond. Each fragment of alga then grows to form new algae. When an alga matures, it breaks up into two (or more) fragments. An alga reproduces by the asexual method of fragmentation. The green patches are due to the growth of plant-like organisms called algae. Many times we see slimy, green patches in ponds or in other stagnant water bodies such as lakes, etc. The breaking up of the body of the parent plant in two or more pieces on maturing, each of which subsequently grows to form a new plant, is called fragmentation. If this process continues, then a large number of yeast cells (or yeast plants) are produced in a short time Fragmentation The new yeast cells grow, mature and produce more yeast cells. After some time, all the yeast cells of the chain separate from one another and form individual yeast plants. The budding in yeast, however, often takes place so fast that the first buds start forming their own buds and all of them remain attached to the parent yeast cell forming a chain of yeast cells. The bud separates off from the parent yeast cell and forms a new yeast cell (or new yeast plant). The nucleus of parent yeast cell then divides into two parts and one part of the nucleus moves into the bud.
In yeast, first a bud appears on the outside of the cell wall. Each single cell of yeast is a complete plant in itself. Yeast is a single-celled plant (or single-celled organism). Yeast is a non-green plant (which is a fungus).
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