Pisces or fish have true internal body cavity.
The hydra is a classic example. See link below for more information.
The mouth of a cnidarian, such as a jellyfish or sea anemone, opens into a central body cavity called the gastrovascular cavity. This cavity serves both digestive and circulatory functions, as it allows nutrients to be absorbed and distributed throughout the organism's body.
A clam has a coelom, which is a fluid-filled body cavity. This cavity provides space for internal organs to develop and function properly.
No, a jellyfish is not a blastopore. A blastopore is the opening of the central cavity of an embryo during early development, while a jellyfish is a gelatinous marine animal belonging to the phylum Cnidaria.
Freshwater mussels possess a body cavity known as a coelom, which is a true coelomate body plan. This coelom is reduced and primarily serves to house the internal organs. The body cavity is divided into sections, with the main parts being the pericardial cavity surrounding the heart and the coelomic cavity housing other organs. Overall, their body structure is adapted to their filter-feeding lifestyle in aquatic environments.
A jellyfish
The hydra is a classic example. See link below for more information.
Acoelomate
The coelenteron is the central body cavity in coelenterates, which are simple aquatic animals like jellyfish and sea anemones. It serves as a digestive cavity where digestion and nutrient absorption take place. The coelenteron also functions in circulation, respiration, and waste elimination in these animals.
The mouth of a cnidarian, such as a jellyfish or sea anemone, opens into a central body cavity called the gastrovascular cavity. This cavity serves both digestive and circulatory functions, as it allows nutrients to be absorbed and distributed throughout the organism's body.
The type of body cavity shared by all mollusks is pseudocoelom is a false statement. The correct answer is coelom.
A clam has a coelom, which is a fluid-filled body cavity. This cavity provides space for internal organs to develop and function properly.
Jellyfish have a body type that is like a sac. They eat with their large stomach sacs, which are called coelenterons.
Turritopsis is a type of jellyfish. All jellyfish have radial symmetry, which is when the symmetry is arranged in a circular pattern, like a wheel, for example.
Exocrine.
jellyfish got their names by their boneless body and their body is sort of like jelly. Of course jellyfish are a type of fish so the scientists just add those 2 elements together and wahlah! JELLYFISH! :)
Acoelomates are animals that do not have a body cavity filled with fluid between the digestive tract and the body wall. Creatures like jellyfish (cnidarians) and flatworms (Platyhelminthes) are all acoelomates