Question
Thu October 25, 2012 By:

madam which is the most basic characterastic for classifying organism? (a)the place where they live (b)the kind of cell they have why?

Expert Reply
Fri October 26, 2012
b)

The kind of cell the organism contains i.e. prokaryotic or eukaryotic is considered to be basic or fundamental characteristic. Since this feature decides the broadest divisions among living organisms.

(They are independent of any other characteristics in their effects on the form and function of the organism. The characteristics in the next level would be dependent on the previous one.)

Presence or absence of nucleus is the basic/fundamental characteristic of classification. This would have an effect on every aspect of cell design. An eukaryotic cell has membrane-bound organelles, including a nucleus, which allow cellular processes to be carried out efficiently in isolation from each other. Therefore, organisms which do not have a clearly demarcated nucleus and other organelles would need to have their biochemical pathways organised in very different ways. Further, nucleated cells would have the capacity to participate in making a multicellular organism because they can take up specialised functions. Therefore, this is a basic characteristic of classification.

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