Question

Is growth a defining property of living organism? Give reason to support your answer​

Answer 1

Answer:

Growth is defined as inversible increase in the number of cells or mass of living structure. If we consider increase in body mass at growth, non living objects like sand mounts grow too. Hence growth cannot be taken as a defining property if living organisms. Though it is a characteristics of living organisms .

Explanation:

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Answer 2

Explanation:

All living organisms grow. Increase in mass and increase in number 

of individuals are twin characteristics of growth. A multicellular organism 

grows by cell division. In plants, this growth by cell division occurs 

continuously throughout their life span. In animals, this growth is seen 

only up to a certain age. However, cell division occurs in certain tissues to 

replace lost cells. Unicellular organisms also grow by cell division. One 

can easily observe this in in vitro cultures by simply counting the number 

of cells under the microscope. In majority of higher animals and plants, 

growth and reproduction are mutually exclusive events. One must 

remember that increase in body mass is considered as growth. Non-living 

objects also grow if we take increase in body mass as a criterion for growth. 

Mountains, boulders and sand mounds do grow. However, this kind of 

growth exhibited by non-living objects is by accumulation of material on 

the surface. In living organisms, growth is from inside. Growth, therefore, 

cannot be taken as a defining property of living organisms. Conditions 

under which it can be observed in all living organisms have to be explained 

and then we understand that it is a characteristic of living systems. A 

dead organism does not grow.