Cnidaria (Jellyfish) & Ctenophora (Comb Jellies)
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.
The tree you are referring to is called a phylogenetic tree. It is developed by scientists to show the evolutionary relationships between different animal phyla based on their shared characteristics and genetic information. These trees help to understand the evolutionary history and relatedness of different organisms.
The phyla that show cephalization include Chordata (which includes vertebrates), Arthropoda (including insects, crustaceans, and spiders), Annelida (segmented worms), and Mollusca (which includes snails, clams, and octopuses).
they show the least in kingdom and the most in phyla
The primary characteristic of the phylum Echinodermata is the presence of a unique water vascular system that is used for locomotion, feeding, and respiration. This system consists of a network of fluid-filled canals and tube feet that help echinoderms move and capture food.
Radial Symmetry
Reacent studies show that they are actually both. hard to understand but very tru.
Flies show bilateral symmetry.
Sponges are asymmetrical, although a few species have nearly radial symmetry.
Deuterostomes that show radial symmetry in their adult form called phylum Echinodermata. Phylum Echinodermata are things like sea stars, sea urchins and sea cucumbers.
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.
yes. because a symmetry is when you draw a reflection so radial reflection is just if you draw the reflection but in the colors it has drawn.
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.
An animal whose body can only be divided in one plane to show mirror images is said to exhibit bilateral symmetry. Bilateral symmetry means that the animal has a distinct front and back, a top and bottom, and two sides that are mirror images of each other. This type of symmetry is characteristic of most animals, including humans, and allows for the development of specialized appendages, such as arms and legs, which are important for movement and manipulation of the environment.
ctenophorains(jellysfish) are spherical in shape much like a ball hence show radial symmetry. echinoderms(starfish) generally are flatter and have 5 arms hence are called pentaradial symmetry (can be cut in only 5 directions)
Insects have bilateral symmetry because if they had radial symmetry, they would have to be perfectly round. Bilateral symmetry is just when you cut something with a line of symmetry down the middle and both sides are symmetrical.
bilateral symmetry