The word which means to cut into two parts is dichotomy morphology nomenclature

Dichotomy

Explanation:

When a whole part is cut into two parts then such a partition is known as a dichotomy. The two parts that get formed from the whole pats are called as the subsets. The two subsets that are formed as a result of dichotomy are complements of each other,In biology, the literal meaning of dichotomy is to divide organisms into two groups, this division of the organisms into two sperate groups is done based on characters that are different in the two groups. For example, if a genus is divided into two species then this is an example of dichotomy.

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