Of course,gastropods [eg:-snail] do not show any symmetry
No, all vertebrates display bilateral symmetry.
All vertebrates including humans display bilateral symmetry.
All vertebrates including humans display bilateral symmetry.
Asymmetrical are organisms, such as sponges, that have no true symmetry.
Sponges exhibit asymmetry, meaning they lack any distinct symmetry. In contrast, organisms from phylum Cnidaria and Arthropoda typically exhibit radial symmetry (such as jellyfish) or bilateral symmetry (like butterflies), respectively, where body parts are arranged around a central axis or mirror images are present on either side of the body.
All vertebrates including humans display bilateral symmetry.All vertebrates including humans display bilateral symmetry.
Platyhelminthes, or flatworms, exhibit bilateral symmetry. This means their body can be divided into two mirror-image halves along a single plane, typically down the middle. This symmetry is associated with their more complex body organization and movement, allowing for a distinct head and tail region. In contrast, many simpler organisms display radial symmetry.
Bilateral Symmetry
Asymmetry, or the absence of symmetry, most often occurs in sessile organisms or in slow-moving forms such as amebas .
Hydra are symmetrical radially from the top
Hydrozoa, a class of the phylum Cnidaria, typically exhibit radial symmetry. This means their body structure is arranged around a central axis, allowing for multiple planes of symmetry. Most hydrozoans, such as the freshwater polyp and the colonial jellyfish, display this symmetry in their body forms, which facilitates their lifestyle as free-swimming or sessile organisms.
A lobster exhibits bilateral symmetry, meaning its body can be divided into two mirror-image halves along a central axis. This symmetry is characteristic of many arthropods, which have a distinct head and tail (anterior and posterior) and paired appendages. In contrast, radial symmetry is found in organisms like jellyfish, while asymmetrical organisms lack any form of symmetry.