Body shapes of cidarians is alike in being radially symmetrical . All are vase like and possess tentacles . Digestive system is sac like wit only one opening mouth .
The body systems that cnidarians have take two forms. The main body forms are medusa and polyp. Cnidarians do not have a transport system and the body surface is used for gaseous exchange.
Cnidarians.
small cnidarians and big cnidarians
Regular shapes and irregular shapes are alike in that both are formed by connecting points in a two-dimensional plane, and they occupy space. They can also both be described by geometric properties such as area, perimeter, and angles. Additionally, both types of shapes can be found in nature and art, serving various functional and aesthetic purposes.
They are all polygons: two-dimensional shapes, bounded by straight lines.
Cnidarians have two main body forms: the medusa form, which is free-swimming and umbrella-shaped, and the polyp form, which is stationary and tube-shaped. Medusae have tentacles around the edge and a central mouth, while polyps have a columnar body with tentacles surrounding a central mouth.
The two body forms of cnidarians are the polyp and the medusa. Polyps are typically sessile, tube-shaped organisms attached to a substrate, while medusae are free-swimming, umbrella-shaped organisms.
polyp and medusa
Cnidarians are segmented into two main classes: Anthozoa (sea anemones and corals) and Medusozoa (jellyfish and hydrozoans), based on their body forms. Anthozoa are generally sedentary, with a polyp body form, while Medusozoa are typically free-swimming with a medusa body form.
Radial symmetry is like spokes on a wheel. Bilateral symmetry is like a human body, cut in half (2).
Hydra - the polyp, anchored with a stalk, tentacles up; and medusa, the jellyfish, swimming free, tentacles down. All cnidarians have both stages, like larva and adult, but they spend more time in one of them and are known as that stage, for example anemones and jellyfish. Anemones have a tiny jellyfish dispersal stage, and jellyfish have a tiny polyp reproduction stage.
The definition of the word "congruent" is two plain figures or shapes that are exactly alike by transition, flip, or rotation.