When applied topically, cayenne pepper benefits the skin, too. It alleviates pain caused by shingles, osteoarthritis, rheumatoid arthritis and even as part of a natural remedy for fibromyalgia. The fruit of the capsicum plant contains a chemical called capsaicin.
Examples of Mechanical Isolation. Mechanical isolation is very common in plants. For example, flowering plants that do not have the correct shape for a pollinator will not receive a pollen transfer, and will therefore not be fertilized.In this case, the shape is the barrier. But keep in mind that mechanical isolation is not always so clear-cut.Think of a Great Dane and a Chihuahua.or example, flowering plants that do not have the correct shape for a pollinator will not receive a pollen transfer, and will therefore not be fertilized. In this case, the shape is the barrier. But keep in mind that mechanical isolation is not always so clear-cut. Think of a Great Dane and a Chihuahua.
The different mechanisms of reproductive isolation are genetically controlled and it has been demonstrated experimentally that they can evolve in species whose geographic distribution overlaps (sympatric speciation) or as the result of adaptive divergence that accompanies allopatric speciation.ny of the factors that prevent potentially fertile individuals from meeting will reproductively isolate the members of distinct species. The types of barriers that can cause this isolation include: different habitats, physical barriers, and a difference in the time of sexual maturity or flowering.