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Animal Symmetry (Symmetry and Daily Life (Animals with Radial Symmetry…

- - - - Ex: Like spokes on a bicycle wheel.
        
        Because of the circular arrangement of their parts animals with radial symmetry, like sea urchins, sea stars, and jellyfish do not have distinct front or back ends.
    - - Most of them don't move very fast and they creep along the bottom, are moved by water currents, or stay in one spot.
  - - - They have a front end that usually goes first as the animal moves along.
        
        These animals move more efficiently and quickly than most animals with radial symmetry.
        
        This is somewhat because bilateral symmetry allows for a streamlined body also most animals with bilateral symmetry have sense organs in their front ends that pick up information about what is in front of them.
        
        Ex: A tiger has whiskers on its head, a nose, ears, and eyes. Sense organs and smooth movement help animals with bilateral symmetry obtain food and avoid enemies.
- - - - Animals have different types of symmetry.
        
        Ex: For a fish you can draw a line lengthwise down the middle of its body and this line is called a line of symmetry. An object has bilateral symmetry if there is just one line that divides it into halves that are mirror images and in contrast objects with radial symmetry have many lines of symmetry that go through a center point. the sea star is a circular if you look at it from the top and any line that is drawn through its Center can divide the sea start into two symmetrical halves. some animals like most sponges have no symmetry.