Question

what are the difficulties that you would face in classification of animal if common fundamental feature are not taken into accounts​

Answer 1

Explanation:

Using the common fundamental features helps in segregating the animals in different groups. Let us take the example of presence or absence of notochord.

Answer 2

we consider specific characteristics, then each organism will be placed in a separate group and the entire objective of classification would not be achieved.

Classification of animals is also important in comparing different organisms and judging their individual evolutionary significance. If only a single characteristic is considered, then this objective would not be achieved.