Entomology is the branch of zoology dedicated to insects, covering their anatomy, life cycles, ecology, and roles as pests or pollinators. It has major applications in agriculture and public health. Trees are studied in dendrology or forestry. Birds fall under ornithology. Flowers are part of botany but do not define entomology.

Cytology (cell biology) examines cell structure, organelles, division, and signaling, forming the basis for understanding tissues and organisms. It uses microscopy and molecular techniques. Mycology studies fungi, not cells generally. Sociology analyzes human societies. Botany focuses on plants as whole organisms.

Gregor Mendel discovered the basic laws of inheritance through pea plant experiments, establishing dominant and recessive traits. His work founded the field of genetics. Charles Darwin developed evolutionary theory, not particulate inheritance. Isaac Newton and Albert Einstein are pillars of physics. Thus, Mendel is correctly titled the father of genetics.

Taxonomy provides the framework for naming (nomenclature), identifying, and classifying organisms into hierarchical groups. It enables clear communication about biodiversity. Anatomy studies organism structure, not naming and classification. Physiology investigates function. Cytology focuses on cells.

Ecology analyzes relationships among organisms and between organisms and abiotic factors like light, nutrients, and temperature. It operates at population, community, and ecosystem levels. Genetics concerns heredity, not environment–interaction patterns. Biochemistry studies chemical processes within living systems. Climatology focuses on climate patterns rather than biological interactions.

Botany examines plant structure, growth, reproduction, physiology, and evolution. It also investigates plant roles in ecosystems and human use. Ecology studies interactions among organisms and their environments, not plants alone. Geology is Earth science, not life science. Zoology focuses on animals.

A zoologist specializes in the biology of animals, including behavior, physiology, classification, and ecology. Their work spans from invertebrates to vertebrates across habitats. Geologists study Earth materials and processes. Botanists focus on plants. Microbiologists study microorganisms.

Genetics studies how traits are transmitted from parents to offspring and how genetic variation arises and is expressed. It encompasses DNA structure, gene expression, and inheritance patterns. Zoology studies animals broadly, not heredity specifically. Anatomy examines bodily structures. Ecology looks at organism–environment relationships.

Microbiology focuses on microorganisms such as bacteria, archaea, viruses, fungi, and protozoa. It addresses their physiology, genetics, and roles in health, industry, and the environment. Botany is the study of plants. Astronomy deals with celestial objects. Ecology examines interactions among organisms and their environments rather than exclusively microbes.

Biology is the science of life, covering structure, function, growth, evolution, and ecology of organisms. Subfields include botany, zoology, microbiology, and genetics. Geology studies Earth’s materials and processes, not life per se. Physics examines matter and energy in general. Astronomy investigates celestial bodies.