Humans, like all mammals and other vertebrates, have bilateral symmetry. This means they have symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.
Chelicerates, a group that includes arachnids and horseshoe crabs, exhibit bilateral symmetry. This means their body can be divided into two mirror-image halves along a single plane that runs from head to tail. They typically show a clear distinction between the cephalothorax (the fused head and thorax) and the abdomen. Additionally, their body plan features paired appendages, which are characteristic of bilateral symmetry.
Platypuses, like all vertebrates, have bilateral symmetry. This means they have symmetry across one plane (known as the sagittal plane, and directly down the centre of their body), which means one side of their body approximately mirrors the other side.
Hummingbirds exhibit bilateral symmetry, meaning their body can be divided into two mirror-image halves along a single vertical plane. This type of symmetry is common in many animals and allows for streamlined movement and balance during flight. Additionally, hummingbirds have a specialized body plan with a lightweight structure, long wings, and a specialized bill that enables them to hover and feed on nectar from flowers efficiently.
Earthworms and insects both display very apparent segmentation. Human beings are also considered to be segmented, with the upper and lower jaws, hyoid bone, vertebrae, and ribs are all evidence of this. Jellyfish do not display segmentation.
Organisms with bilateral symmetry and segmented bodies, such as arthropods (insects, crustaceans) and annelids (segmented worms), show a close evolutionary relationship. Both groups exhibit a segmented body plan, which is a key feature that reflects their evolutionary lineage. Additionally, their bilateral symmetry allows for a more efficient body organization, which is advantageous for movement and interaction with their environment. This close relationship is further supported by molecular and genetic evidence.
bilateral symmetry- body plan in which an animal that can be dinided into 2 equal sdes.
Most animal phyla exhibit bilateral symmetry, where the body can be divided into two mirror-image halves along a single plane. This body plan is thought to have evolved for efficient movement and coordination in organisms.
an asymmetrical body plan
Radial symmetry
hookworms have bilateral symmetry
small black animals but not tadpoles
For a body plan, a starfish has 5-part radial symmetry, spiny skin, internal skeleton, water vascular system, and suction cup-like structures called tube feet.
bilateral symmetry
A body plan in which an organism can be divided along only one plan of their body to produce 2 mirror images.
balls
Trees have roughly radial symmetry.
No, sponges do not exhibit bilateral symmetry in adults. They are classified as asymmetrical or have radial symmetry, depending on the species. Their body structure is more irregular and lacks defined symmetry, which is characteristic of their simple body plan and filtering lifestyle.