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Plant Growth is characterised by three phases- Cell division , Cell elongation and Cell maturation, where Maturation is just specilisation of cells, Only major contributory effect in growth is of cell elongation and cell division

  1. What advantages does cell elongation growth give to the Plants?

  2. I want to know why cell elongation is chosen by Plants to Grow In length and size, because when the size of cell increases , the Surface area to volume ratio decreases ( as volume increases by r^3 and surface area by r^2), which is not very good because surface area needed to take care of the new increased volume is decreased now.

  3. If this doesn't disturb surface area to volume balance then why Animals don't use the same strategy of cell elongation? Assuming there is no shortage of water for animals living in the sea ofcourse.

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  • $\begingroup$ "as volume increases by r^3 and surface area by r^2" - aka square-cube law applies when object grows/scales in all dimensions equaly. Elongation is growth only in one dimension. Think about it once more and try to calculate volume and surface area of few long cylinders of various lengths and equal diameter. Think about a wire. Actual wire being the volume and insulation/coating being a surface. If you add 1 m to wire you are adding respective amout of coating. The relationship between added wire and added coating is linear. In elongation added volume and added surface are balanced. $\endgroup$
    – BagiM
    Aug 23 '21 at 20:02

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