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The term "pseudocoelom" refers to how the body cavity appears in the embryo of an organism. As you probably know, the bilaterians (all organisms with left-right symmetry, and the echinoderms for phylogenetic reasons) have three layers of tissue in the embryo: the ectoderm, endoderm, and mesoderm. In the "true" coelomates, the body cavity ("coelom") is completely surrounded by mesodermal tissue. In the pseudocoelomates, though, the body cavity is partly surrounded by mesoderm but partly surrounded by endoderm.
It should be noted that, given our current understanding, the pseudocoelomates do not form a valid taxonomic group. In previous years, the various groups of pseudocoelomates, including the roundworms (Phylum Nematoda), wheel animals (Phylum Rotifera), and others were lumped into one group called the "ascelminthes". Modern fossil and genetic evidence, however, shows that the pseudocoelom has appeared multiple times independently in the animal kingdom.
What else can I help you with?
What type of coelom does ascaris have?
Ascaris has a pseudocoelom, which is a body cavity that is partially lined by mesoderm but lacks a full peritoneal lining like a true coelom.
Where do the internal organs of Ascaris attach to the body wall?
The digestive tract and reproductive organs of an Ascaris are free floating within the body and do not attach to the body wall. Ascaris do not have any other internal organs other than the gut and internal reproductive organs, as breathing and waste excretion are handled externally within the body wall.
What is the body cavity that contains the mouth?
The mouth is also known as the oral cavity.
What is the body symmetry of ascaris?
bilateral
How many does an ascaris body have?
4
How many opening does an ascaris body have?
4
HOW MANY OPENINGS DOES ASCARIS BODY HAVE?
4
What is ascaris infection?
Ascaris infection, also known as ascariasis, is a type of parasitic infection caused by the roundworm Ascaris lumbricoides. It commonly occurs in areas with poor sanitation and hygiene. Symptoms may include abdominal pain, diarrhea, and malnutrition. Treatment usually involves medication to eliminate the worms from the body.
Why the body cavity of cockroach is called haemoceol?
the body cavity of cockroach is called heamoceol because their blood circulates in the body sinuses .these blood sinuses collectively known as haemoceol.
What is the body cavity that contains the lungs heart aorta esophagus and the trachea is known as the?
The body cavity that contains the lungs, heart, aorta, esophagus, and trachea is known as the thoracic cavity. It is located in the upper part of the body, bordered by the ribs, sternum, and diaphragm. The thoracic cavity plays a crucial role in protecting and housing vital organs involved in respiration and circulation.
The brain and the spinal cavity are located in what body cavity?
The brain and the spinal cavity are located in the dorsal body cavity.
What type of Body Cavity do Freshwater Mussel?
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.
