Bilaterally symmetrical, also known as bilateral symmetry, refers to an organism or structure that is equally divided into two mirrored halves. The antonym for bilaterally symmetrical is radial symmetry, which refers to an organism or structure that is equally divided in all directions from the center, like a starfish or a jellyfish. In radial symmetry, there is no distinct right or left side, and the organism can be bisected into multiple planes, resulting in identical parts. Bilateral and radial symmetry are two contrasting forms of symmetry found in the animal kingdom, and they have evolved to suit different lifestyles, habitats, and feeding strategies of organisms.

What are the antonyms for Bilaterally symmetrical?

• adj.

  • all
  • actinomorphic
  .
  • noun
  • actinomorphous
  ,
  • asymmetric
  .

Famous quotes with Bilaterally symmetrical

• Arthropods and vertebrates share some broad features of general organization - elongated, bilaterally symmetrical bodies, with sensory organs up front, excretory structures in the back, and some form of segmentation along the major axis. But the geometry of major internal organs could hardly be more different... Arthropods concentrate their nervous system on their ventral (belly) side as two major cords running along the bottom surface of the animal. The mouth also opens on the ventral side, with the esophagus passing between the two nerve cords, and the stomach and remainder of the digestive tube running along the body the nerve cords. In vertebrates, and with maximal contrast, the central nervous system runs along the dorsal (top) surface as a single tube culminating in a bulbous brain at the front end. The entire digestive system then runs along the body axis the nerve cord.

  Stephen Jay Gould

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Related words: bilateral symmetry, bilateral symmetry definition, symmetry meaning in biology, bilateral symmetry meaning, animal bilateral symmetry, types of bilateral symmetry, left-right symmetry

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