Do all animals contain a circulatory system

Do all animals contain a circulatory system?

E

Expert

Verified

Not all animals contain a circulatory system. Poriferans, platyhelminthes, cnidarians, and nematodes (in such there are pseudocoelom fluid however no vessels) are avascular animals. Echinoderms do not encompass true circulatory systems either.

   Related Questions in Biology

  • Q : Explanation of pentoses Give a brief

    Give a brief explanation of pentoses? To which organic group do pentoses belong? Are nucleotides formed of only one form of the pentose?

  • Q : Orders of placental mammals Specify

    Specify main orders of the placental mammals? List some of the representative species and distinguishing features of each of those orders?

  • Q : Types of reproduction in cnidarians

    Name the types of reproduction represented by cnidarians? Answer: They consist of asexual and sexual reproduction.

  • Q : Simple and facilitated diffusion What

    What is the basic difference among simple and facilitated diffusion? Facilitated by which kind of molecule does the word facilitated signify?

  • Q : Sickle cell anemia-hereditary

    In the sickle cell anemia, hereditary disease, there is swap of one amino acid through another in one of the four polypeptide chains of hemoglobin. In this situation are all of the structural levels of protein modified?

  • Q : Human insulin generate by bacteria and

    How can bacteria generate human insulin on a large scale? Describe other forms of insulin which were made available with the help of the pharmaceutical industry?

  • Q : How molecules-atoms-cells-biosphere are

    Describe the logical order in which the concepts of molecules, atoms, cells and so on up to the biosphere are related?

  • Q : Separation of homologous chromosomes

    Throughout mitotic anaphase is there separation of homologous chromosomes or the separation of similar chromatids?

  • Q : OLAP and OLTP Explain the difference

    Explain the difference between OLAP and OLTP?

  • Q : What is Systems Implementation Systems

    Systems Implementation: It is the practice of making or modifying a system to build a new business process or substitute an existing business procedure. The technology integration is the practice of integrating multiple system actions to interact and

©TutorsGlobe All rights reserved 2022-2023.