The absence of chlorophyll in the lowermost c | vedclass

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(D) In $Ulothrix$,the lowermost cell is modified into a specialized structure called a holdfast. This cell lacks chlorophyll because its primary funct

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Beginning of division of labor

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(D) In $Ulothrix$,the lowermost cell is modified into a specialized structure called a holdfast. This cell lacks chlorophyll because its primary function is to attach the filament to a substrate,not to perform photosynthesis. This specialization of a specific cell for a particular function (attachment) rather than the general function of the organism (photosynthesis) represents the beginning of the division of labor within a multicellular organism.

The absence of chlorophyll in the lowermost cells of $Ulothrix$ indicates:

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