--%>
Assignment Help - homework help

Complete evolutionary branch of the vertebrates

Explain the six criteria employed to build a complete evolutionary branch of the vertebrates?

E

Expert

Verified

Dichotomy in each of six following criteria forms the vertebrate evolutionary branch: deficiency of mandibles separates cyclostomes from others; deficiency of limbs detaches fishes from the remaining; detaches of osseous skeleton detaches chondrichthian (or cartilaginous) fishes from osteichthyes; in the presence of impermeable skin detaches amphibians from the terrestrial vertebrates; in the presence of warm blood (or homeothermic body) separates reptiles from mammals and birds; absence of mammary glands and hair detaches birds from mammals.

Evolutionarily protochordates might be intermediate animals among vertebrates and invertebrates.

   Related Questions in Biology

  • Q : Example of movement-Contraction of

    Write down some examples of movement which are created by the contraction of sarcomeres of muscle cells?

    		•
  • Q : Define tablet excipients Tablet

    Tablet excipients: Tablet excipients are agents employed throughout the tableting procedure to aid the powder flow via the equipment without sticking, or to enhance the tablet’s compressibility, consistency, or other desired features.  

    		•
  • Q : Managing Organization Change What are

    What are the steps in managing Organization Change?

    		•
  • Q : Define the term microbiology Define the

    Define the term microbiology. Briefly define it.

    		•
  • Q : Advantages of Equity Motivation -

    1)     The theory has generated extensive research, with many of the results being supportive. 2)     The theory recognizes the influence of social comparison processes on motivation. Individuals are concerned not only with the absolute amounts of r

    		•
  • Q : Hypothesis for plant tissue Specify the

    Specify the best identification hypothesis for the plant tissue seen under microscope having most cells going through cell division?

    		•
  • Q : Differences between the signaling

    What are the similarities and differences  between the  signaling arrays and responses that are driven and associated with the “Jasmontates” in plants, and the “eicosanoids”; arachidonic acid cascade components in animals?  This is a large enough question th

    		•
  • Q : Goal Management and Local Talent

    Goal Management and Local Talent Management: Minimum criteria for employees should be set from the global headquarters and that should be mandatory when selection procedure is done. After short listing the candidate on the basis of minimum criteria, t

    		•
  • Q : Function of the skin in humans Write

    Write some function of the skin in humans? Answer: The skin is an external covering of the body. In humans its major functions are protection, perception of informat

    		•
  • Q : Name of the membrane which delimits

    Write down the name of the membrane which delimits nucleus. Toward which constituent of the cell structure is that membrane contiguous?

    		•