Difference between growth and development.Please answer this question so that I can study properly

growth and development is one of the most imp. characteristic of living beings. here growth means internal growth (not any external growth like addition of sand on a hill causing the hill to look bigger).

Note: as growth is seen in both living and non living, it is NOT a defining character / absolute phenomena

In true meaning, if a protoplasm carries metaboli8c reactions, and in that too, ANABOLIC REACTION > CATABOLIC REACTION, it starts growing in volume and hence, the cell divides if it crosses nucleoplasmic ratio or index. with increasing volume of cytoplasm, nucleus slowly loses its control over such a vast volume, hence nucleus duplicates its DNA and redivides into two daughter nucleus, then cytoplasm divides and Hence, CELL DIVISION occurs.

thus, we can say that, growth is a superset; metabolic reaction and cell division are its subsets.

i.e GROWTH: {met. rxns, cell div.}

now, SUM TOTAL OF GROWTH IS CALLED DEVELOPMENT 

development can be said as “GROWTH WITH DIRECTION”.

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”GROWTH IS LIKE A SCALAR AND, DEVELOPMENT IS LIKE A VECTOR” 

 

                                                                                         hope u find it useful

                                                                                             -omkar jilla(an AIIMS aspirant)