Answer:
Option D, Morphology
Explanation:
In general, Morphology is the branch of science that deals with the study of structure, forms and patterns of any physical thing. In biology, morphology deals with the study of forms , structure and parts of animals and plants. For example reptilian morphology, morphological distinctions between species of same kind etc. Morphological distinctions are important in biology as they help scientist to classify animal and plant species.
