Question

how is radical symmetry different from bilateral symmetry​

Answer 1

Answer:

Radial symmetry and bilateral symmetry are two different types of biological symmetries found in organisms. ... The key difference between radial and bilateral symmetry is that radial symmetry generates identical body halves around the central axis whereas bilateral symmetry generates only two sides as left and right.

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Answer 2

Answer:

An animal with radial symmetry could be divided into equal portions from the center, in the same way that you could cut a pie into wedges. An animal with radial symmetry really has no right and left side or head and rear end. Radial symmetry is ideal for animals that do not move, so they can reach into their environment on all sides. Consider the starfish as an example of radial symmetry.

Bilateral Symmetry - Heads or Tails

Animals with bilateral symmetry can be divided only into mirror halves through a single plane. Higher animals that move are normally bilateral, with matching left and right sides. Bilateral symmetry is associated with having a head or leading end of a body that encounters the environment first, so the sense organs like eyes and mouth are usually there. Bilateral symmetry often gives animals more streamlined shapes for moving through their environments. You, your dog and his fleas are bilateral.

Animals With Radial Symmetry

Animals with radial symmetry tend to have a surface that contains a mouth at the center, and they can reach out in all directions to gather food for that mouth. They can be attached to a substrate, like the sea anemone, or floating, like jellyfish. Radial symmetry occurs in simple animals including the aquatic cnidarians, which include corals, jellyfish and sea anemones, and Ctenophora, which are comb jellies. A group called dchinoderms consists of starfish, sand dollars and sea urchins; these have unique five-point radial symmetry.

Animals With Bilateral Symmetry

Most creatures we see around us have bilateral symmetry. Examples are worms, insects, spiders, fish, birds and mammals, including humans. In evolution, bilateral symmetry was an important step toward the development of a head and the concentration of sensory organs. Animals with bilateral symmetry do not have both halves as perfect mirror images – often one foot or ear can be bigger than another and internal organs are not symmetric in their shape or positioning.