How did Aristotle classify animals based on the presence or absence of red blood?

How did Aristotle classify organisms ?

Classify animals based on coelom.

Classify animals based on their economic importance

How are flowers classified based on the presence or absence of pedicels?

How are seeds classified baed on the presence of absence of the endosperm?

Blood group is due to the presence or absence of

What is notochord? How the animals are classified based on this presence or absence of notochord?

Aristotle classified animals in two groups on the basis of presence of absence of RBC. The group which does not have RBCs is

Aristotle classified animals in two groups on the basis of presence of absence of RBC. The group which does not have RBCs is