Structure of Microbes Classification of Microbes Morphological Types in Microbiology Microorganisms are classified based on their morphology into different types. These morphological distinctions include shape, size, arrangement, and structural features. Below is a detailed explanation of the morphological types: 1. Morphological Types of Bacteria Based on Shape: 2. Morphological Types of Viruses 3. Morphological Types of Fungi 4. Morphological Types of Protozoa 5. Morphological Types of Algae 6. Morphological Types