Share. By Jennifer Kennedy. Definition: Radial symmetry is the regular arrangement of body parts around a central axis. When an organism is radially symmetrical, you could cut from one side of the organism through the center, to the other side, anywhere on the organism, and this cut would produce two equal halves.Examples: Sea urchins have radial symmetry.hen an organism is radially symmetrical, you could cut from one side of the organism through the center, to the other side, anywhere on the organism, and this cut would produce two equal halves.
Stevia is probably better for you than Xylitol because Xylitol is still a sugar and contains calories. If youâre going to use a sweetener, I advise you to only choose Stevia, Xylitol, and Lakanto. Other than that, Iâd forgot all the other zero calorie natural and artificial sweeteners.tevia and Xylitol are much better than most sugars, but maybe not the choice to make if you want to break free from a sugar addiction. Like me, if you canât live without some sweetness in your life, you have options. Letâs examine the three best natural sweeteners and recommended brands for each type of sweetener.
1 One of the benefits of stevia is that it contains a 702 ppm level of iron which can stimulate the production of hemoglobin. 2  Stevia and other artificial sweeteners that have been approved for use in the US do not appear to pose any health risks when used in moderation. Stevia is much sweeter than sugar-the extract can taste 250-300 times sweeter than table sugar. 2  The extract is contained in a number of food items in the US such as energy bars, candies, protein drinks and some teas.