Deuterostomes that show radial symmetry in their adult form called phylum Echinodermata. Phylum Echinodermata are things like sea stars, sea urchins and sea cucumbers.
No. Most have radial symmetry. No. Most have radial symmetry.
Radial symmetry
Radial Symmetry
yeah yeah
Adult echinoderms have pentaradial symmetry, meaning they are typically organized in a five-fold radial pattern around a central axis. This unique form of symmetry is characteristic of this group of marine animals.
Sponges are asymmetrical, although a few species have nearly radial symmetry.
the same type as blue footed underwater donkeys.
The phylum Echinodermata has radial symmetry as adults. These organisms include sea stars, sea urchins, and sand dollars, among others. Radial symmetry means that body parts are arranged around a central axis, like the spokes of a wheel.
they have radially symmetricalANS2:They appear to have radial symmetry but closer inspection will show that the madreporite (sieve plate) is not centered and the animal's behavior demonstrates that it has a preference in its axis of motion i.e., it has a "head end" even though it has no head. The bipinnaria larva of the starfish is bilaterally symmetrical and only takes on the apparent radial symmetry as an adult. Because of the off-center location of the madreporite, one could argue that the adult is bilaterally symmetrical but, junior high and high school biology classes don't encourage you to disagree so, you should probably answer "radial" if you are answering a multiple choice question.ANS3:Radial because it has more than one line of symmetry through the center Further Comment: I question the logic for answer 3. More than one line of symmetry through the central does not imply radial symmetry. I vote for ans1 as an approximation, and ans2 as a more detailed answer.
Adult Hemichordates exhibit bilateral symmetry, meaning their bodies can be divided into two similar halves along a single plane. However, during their larval stage, some species of Hemichordates show a form of metameric or radial symmetry.
deuterostomes
Echinoderms are thought to have evolved from bilaterally symmetrical ancestors because their larval forms exhibit bilateral symmetry. Over time, echinoderms undergo a process called pentaradial symmetry, where they develop a five-point radial symmetry characteristic of adult echinoderms. This suggests a modification from bilateral to radial symmetry during evolution.