Bilateral symmetry Notes: Definitions & Explanations PDF | Download eBooks
Study Bilateral symmetry lecture notes PDF with biology definitions and explanation to study What is Bilateral symmetry?. Study bilateral symmetry explanation with biology terms to review biology course for online degree programs.
Bilateral symmetry Definition:
Two-sided symmetry of a shovel is an example of bilateral symmetry. A bilateral animal has two axes of orientation: front to back and top to bottom.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Bilateral symmetry Notes:
In bilateral symmetry (also called plane symmetry), only one plane, called the sagittal plane, divides an organism into roughly mirror image halves. Thus there is approximate reflection symmetry. Internal organs are however not necessarily symmetric. Animals that are bilaterally symmetric have mirror symmetry in the sagittal plane, which divides the body vertically into left and right halves, with one of each sense organ and limb group on either side. At least 99% of animals are bilaterally symmetric, including humans,.
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