Within a life cycle, a cnidarian transitioning between a polyp and a medusa is not evolution. Evolution happens over many generations, not within a single one. How the two forms evolved to both take place within a single life cycle is not well understood.
polyp
A medusa looks like an umbrella and a polyp any idea!
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! The star coral is attached and is faceup
Polyp and medusa are two stages in life cycle of cnidarians , polyp is hydra like and medusa is jelly fish like .
a Medusa or a Polyp.
The medusa (jellyfish like) and the polyp (sea anenome like)
polyp and medusa
polyp and medusa
who or wat is polyp a polyp stays alive by staying in its vase shape dome then it will turn into a (Medusa) grone-up jellyfish :)
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.
polyp---sea anenome, medusa---jellyfish Phlycabs In plain English a polyp is a cylinder with tentacles at the top. The Hydra looks like a tin can with slender arms coming from the top of its body. This body form does not move and the animals are trappers. The medusa is an umbrella shaped structure with tentacles hanging down from it. The jellyfish is an example. These animals move. During the reproductive stages of the jellyfish there is a time when they take on the polyp form. Then they bud off and become medusa. Nighthawk