WebCnidarians. The phylum Cnidaria includes animals that show radial or biradial symmetry and are diploblastic. Nearly all (about 99 percent) cnidarians are marine species. Cnidarians have specialized cells known as cnidocytes (“stinging cells”) containing organelles called nematocysts.These cells are concentrated around the mouth and tentacles of the animal … WebMar 24, 2024 · The closed circulatory system of some mollusks and all vertebrates and higher invertebrates is a much more efficient system. Here blood is pumped through a closed system of arteries, ... One of the simplest types of closed circulatory systems is found in annelids such as the earthworm. Earthworms have two main blood vessels—a …
28.3G: Phylum Annelida - Biology LibreTexts
WebWhich type of circulatory system do Annelids have? answer choices . Open. Closed. Full. None of the above. Tags: Question 6 . SURVEY . 30 seconds . Q. In a triploblastic organism, which of the following is not one of the three tissue layers? answer choices . Ectoderm. Endoderm. Entoderm. Mesoderm. Tags: WebOct 22, 2024 · The circulatory system of arthropods is made up of a tube (the heart), and an open hemocoel (in which the blood moves). Annelids are invertebrate animals that have a body cavity, movable bristles, and a segmented body. Annelids include earthworms, and leeches. The circulatory system of annelids is closed; blood circulates through a … circumcision with gomco clamp cpt
Mollusks and Annelids – Introductory Biology: …
WebFeb 20, 2024 · Due to the presence of a coelom along with increased size/complexity, annelids developed a circulatory system to transport oxygen, nutrients, and remove … WebMay 30, 2024 · Which of the following is a correct description of setae? Annelids have an open circulatory system, while molluscs have a closed circulatory system. … WebAnnelids possess a well-developed complete digestive system with specialized organs: mouth, muscular pharynx, esophagus, and crop. A cross-sectional view of a body … circumcision wikimedia