Bryophytes are some of the oldest and most primitive plants still extant on earth, and since they are unable to utilize xylem and phloem like vascular plants to transport water, food, and minerals throughout the plant body, they must remain small and live in a very moist environment ( Shaw et al 2003). ... They share many common features of aquatic algae and other simple plant-like water organisms, as well as precursors to the more evolved land plants such as the gymnosperms and angiosperms. ... Seedless vascular plants are still a primitive form compared to our modern flowering plants, a...

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Finally another great example is a vascular plant which adapted from early non-vascular plants. Vascular plants had to adapt and develop an internal transportation system. 2. ... Geographical/Biological Isolation and reproductive Isolation are what guide to speciation. ... Geographical/Biological Isolation and reproductive Isolation must occur in order for one original species to have developed into two different species. 3. ... When these organisms have a serious disease, organ problems/malfunctions, inefficient amount of blood and even reproductive problems we can intervene with their gene...

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