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  2. File:Diagram comparing bilateral, radial, and spherical ...

    en.wikipedia.org/wiki/File:Diagram_comparing...

    English: Illustrating different forms of symmetry in biology - the three main forms (bilateral, radial and spherical). Cartoon form generated using shapes from biorender. To be used in the symmetry in biology page.

  3. Symmetry in biology - Wikipedia

    en.wikipedia.org/wiki/Symmetry_in_biology

    A selection of animals showing a range of possible body symmetries, including asymmetry, radial, and bilateral body plans Illustration depicting the difference between bilateral , radial (actinomorphic flowers) and spherical (coccus bacteria) symmetry. Symmetry in biology refers to the symmetry observed in organisms, including plants, animals ...

  4. Floral morphology - Wikipedia

    en.wikipedia.org/wiki/Floral_morphology

    The flowers called actinomorphics, radiate or polysymmetric have radial symmetry, as is the case of Tulipa gesneriana or Linum usitatissimum . In contrast, monosymmetrica l, dorsiventral or zygomorphic flowers have bilateral symmetry and the evolution of their shape is related to the need to attract and guide pollinators to them, as for example ...

  5. Floral symmetry - Wikipedia

    en.wikipedia.org/wiki/Floral_symmetry

    Some authors prefer the term monosymmetry or bilateral symmetry. [1] The asymmetry allows pollen to be deposited in specific locations on pollinating insects and this specificity can result in evolution of new species. [2] Globally and within individual networks, zygomorphic flowers are a minority.

  6. Body plan - Wikipedia

    en.wikipedia.org/wiki/Body_plan

    Segmentation (biology) – Division of some animal and plant body plans into a series of segments; Supernumerary body part – Growth of an additional part of the body and a deviation from the body plan; Symmetry in biology – Geometric symmetry in living beings

  7. Symmetry - Wikipedia

    en.wikipedia.org/wiki/Symmetry

    In biology, the notion of symmetry is also used as in physics, that is to say to describe the properties of the objects studied, including their interactions. A remarkable property of biological evolution is the changes of symmetry corresponding to the appearance of new parts and dynamics.

  8. Cellularization - Wikipedia

    en.wikipedia.org/wiki/Cellularization

    Therefore, the theory assumes that bilateral symmetry is more primitive than radial symmetry. However, current biological evidence shows that the most primitive forms of metazoans show radial symmetry, and thus radially symmetrical animals like cnidaria cannot be derived from bilateral flatworms.

  9. Histogenesis - Wikipedia

    en.wikipedia.org/wiki/Histogenesis

    Animals with radial symmetry, such as cnidarians, produce two layers, called the ectoderm and endoderm. They are diploblastic. Animals with bilateral symmetry produce a third layer in-between called mesoderm, making them triploblastic.