--%>
Assignment Help - homework help

Other means for transport of substances in animals

What is the other means for transport of substances in animals devoid of a circulatory system? Why is blood significant for bigger animals?

E

Expert

Verified

The animals which do not have the circulatory system, transportation of substances takes place by cell to cell diffusion.

The blood is a basic means of substance transport for bigger animals as in such animals there are tissues distant from one other and from the atmosphere therefore making diffusion not possible.

   Related Questions in Biology

  • Q : Substrate concentration affects speed

    How does the substrate concentration influence the speed of enzymatic reactions?

    		•
  • Q : Starting and the end of third

    Name the events which mark the starting and the end of third interphase period? What occurs in the cell in this period?

    		•
  • Q : Excitation threshold of a neuron

    Describe the excitation threshold of a neuron? How does this threshold associate to the “all-or-nothing” rule of neural transmission?

    		•
  • Q : Events of the primary mitotic period

    What are the major events of the primary mitotic period?

    		•
  • Q : Natural and essential amino acids What

    What is the basic difference among natural and essential amino acids?

    		•
  • Q : Disadvantages of Equity Motivation -

    1)     Is a given factor and input or an outcome? For example, "responsibility" is viewed by some as input and as output by others. 2)     How does a person choose (or change) the comparison other? 3)     Under what circu

    		•
  • Q : The Balanced Scorecard approach for

    In the 1970s and 1980s companies were starting to recognize that focusing purely on the hard aspects of business was not necessarily the route to success. The work was started by Tanner Pascal & Athos who wrote the book 'The Art of Japanese Management.'3 They

    		•
  • Q : Disadvantages of bureaucracy

    Disadvantages of bureaucracy a coin has two sides. So, bureaucracy has disadvantages or limitations also. The disadvantages or limitations of bureau

    		•
  • Q : Examples of representing beings-type of

    Mollusc identity card. How molluscs typified according to examples of the representing beings, type of symmetry, basic morphology, coelom and germ layers, respiratory system, digestive system, circulatory system, nervous system, excretory system and types of a reprodu

    		•
  • Q : Amine and carboxyl groups- central

    Do amine and carboxyl groups attached to central carbons participate in union between amino acids?

    		•