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Triclads reproduce sexually and asexually, and different species may be able to reproduce by one or both modes. [5] Planarians are hermaphrodites. In sexual reproduction, the mating generally involves mutual insemination. Thus, one of their gametes will combine with the gamete of another planarian.
The white structure seen in the upper animal is the protruded penis papilla. The reproductive system of planarians is broadly similar among different families, although the associated structures can vary in complexity. All planarians are hermaphrodites, so their reproductive system has a male and a female part.
Fragmentation is seen in many organisms. Animals that reproduce asexually include planarians, many annelid worms including polychaetes [17] and some oligochaetes, [17] turbellarians and sea stars. Many fungi and plants reproduce asexually. Some plants have specialized structures for reproduction via fragmentation, such as gemmae in mosses and ...
In a related context, some animals are able to reproduce asexually through fragmentation, budding, or fission. [9] A planarian parent, for example, will constrict, split in the middle, and each half generates a new end to form two clones of the original. [14]
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Fragmentation is a very common type of vegetative reproduction in plants. Many trees, shrubs, nonwoody perennials, and ferns form clonal colonies by producing new rooted shoots by rhizomes or stolons, which increases the diameter of the colony. If a rooted shoot becomes detached from the colony, then fragmentation has occurred. There are ...
A Texas woman is charged with murder after police say she fatally shot her husband, lit his truck on fire and fled the scene in a kayak. Bexar County, Texas officials found the body of Tomas ...
Philadelphia teacher Ellen Greenberg's death was ruled a suicide after the 27-year-old was found with 20 stab wounds; her fiancé makes his first public statement on her death.