Webnoun. any worm of the phylum Platyhelminthes, having bilateral symmetry and a soft, solid, usually flattened body, including the planarians, tapeworms, and trematodes; … WebB) egg-laying. C) descended from fish. D) leading a double life. E) having four limbs. E) having four limbs. The feature present in reptiles and absent in amphibians that freed reptiles from dependence on water for reproduction is ______. A) parental care of eggs. B) waterproof skin. C) metamorphosis.

9.4: Flatworms - K12 LibreTexts

WebThey are characterized by bilateral symmetry, absence of a body cavity, no respiratory and circulatory organs, and well-developed flame cells to carry out the excretory function. Platyhelminthes also known as … hisense screen share with laptop

Characteristics of Platyhelminthes - Biology Wise

WebBilateral symmetry was a major evolutionary advance among the animals because it allows different parts of the body to become specialized in different ways. For example, most bilaterally symmetrical animals have evolved a definite head end, a process called cephalization. ... Flatworms have internal organs, bilateral symmetry, and a distinct ... WebFlatworms have no true body cavity, but they do have bilateral symmetry. Due to the lack of a body cavity, flatworms are known as acoelomates. Flatworms have an incomplete … WebCharacteristics of Platyhelminthes. Platyhelminthes have the following important characteristics: They are triploblastic, acoelomate, and bilaterally symmetrical. They may be free-living or parasites. The body has a soft … hisense screenless mode