Expert: Walter Hintz - 9/23/2006

Question
Mr Hintz,

Thank you, I find this very interesting, could you elaborate on why with cell walls the nervous and muscle tissues could not have evolved and movement would not be possible in animals?   

V/r
Diane
 
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Followup To

Question -
Can you help me understand cell wallfunctions?  I understand plant cells have a cell wall, that helps in the photosynthesis process, keep its structure and storing water and nutrients but why would this cell wall structure be a  disadvantageous if surrounding cells in animals?

Answer -
Hi Diane
 You are correct about the function of cell walls. They allow rigidity in the plant.  Without them tree could not get hundreds of feet high.  The lack of cell walls in animals allows for greater diversity in cell and tissue types.  With cell walls nervous and muscle tissues could not have evolved and movement would not be possible

Answer
Hi again Dianne
I was afraid you were going to ask me that.  Instead of saying that cells walls could not evolve I should of said they did not evolve.  In biology "why" questions are very difficult to answer.  The fact of the matter is that some cells developed cell walls and some did not and those that did not became eukaryotic animal cells.  Many evolutionists chalk it up to random mutations.