Final answer:
Morphology refers to the study of forms and structures of organisms, focusing on their physical traits to classify and understand their evolutionary relationships.
Step-by-step explanation:
The meaning of morphology in the context of biology is b) Study of forms and structures. Morphology deals with the form and structure of organisms and is a critical aspect of biological sciences. It is used to classify organisms based on physical characteristics, which often reflect genetic changes and can indicate evolutionary relationships. Morphology typically looks at obvious physical traits, but it can also include the microscopic structure of organisms. It is distinct from histology, which is the study of the shape and arrangement of cells in tissues, and from systematics, which entails understanding the evolutionary relationships of organisms.
Comparative anatomy is a related field that studies the similarities and differences in the structures of different species, which often relies on morphological evidence. Understanding the morphology of organisms also assists in creating phylogenetic trees, as it is one of the types of evidence alongside genetic information used to determine evolutionary connections.