Body Cavities Now go back to your previous drawings of Scypha, Hydra, Planaria,
ID: 3478384 • Letter: B
Question
Body Cavities Now go back to your previous drawings of Scypha, Hydra, Planaria, the body cavities that are present in each organisms y cavities that are present in eac ese organisms contain a digestive cavity. This is the area of the body in which food is processed and tro Ascaris, and the earthworm and examine h of the organisms. There are two types of body cavity in these organisms which waste is released in some way. In the more complex organisms, in addition to a digestive cavity cavity in the body that is not related to the digestion of food. These organisms have another body cavity that is found in or next to the mesodermally derived muscle tissues of the organism and is either a pseudocoe coelom. Examine each of the drawings and label the digestive body cavities. In the organisms that have a pseudocoelom or a coelom label these cavities appropriately om or Describe the differences you observed in body cavities among the acoelomate Planaria, the pseudocoelomate Ascaris and the coelomate earthworm.Explanation / Answer
Acoelomate animals do not have true body cavity. They lack the coelom and is entirely filled with cells. Eg. Planaria.
Pseudocoelomate animals have some of the features suggestive of body cavity. But, they lack mesentery and peritoneum. Eg. Ascaris.
Coelomate animals have true body cavity. The internal organs in these animals are surrounded by peritoneal membranes. Eg. Earthworm.