| Disciplines | Meaning |
| Aerobiology | It is a branch of biology that studies organic particles, such as bacteria, fungal spores, very small insects, pollen grains and viruses, which are passively transported by the air |
| Agriculture | It is the science or practice of farming. It includes the study of producing crops from the soil, with an importance on practical applications |
| Anatomy | It is the scientific study of the structure of human or animal bodies. |
| Astrobiology | The branch of biology concerned with the effects of outer space on living organisms and the search for extraterrestrial life. Astrobiology is the study of all living things within the universe, where they might be found and how they were formed. It is the study of evolution, distribution, and future of life in the universe. Also known as exobiology, exopaleontology, and bioastronomy. |
| Biochemistry | The scientific study of the chemistry of living things. the study of the chemical reactions required for life to exist and function |
| Bioclimatology | Ecological science, branch of climatology and a interdisciplinary field of science that deals with the relations between the climate and the distribution of the living species on earth. Or we may say it deals with the effects of physical environment on living organism over an extended period of time. |
| Bioengineering | The study of biology through the means of engineering with an emphasis on applied knowledge and especially related to biotechnology (study the relation between workers and their environments using biological science). |
| Biogeography | The study of the locations of organisms around the world; the study of the geographical distribution of living organisms and fossils in geographic space and through geological time. |
| Bioinformatics | Bioinformatics is the application of information technology and computer science to the field of molecular biology. the use of information technology for the study, collection, and storage of genomic and other biological data |
| Biomathematics or Mathematical Biology | The study of biological processes through mathematics, with an emphasis on modeling. |
| Biomechanics | Biomechanics is the application of mechanical principles to living organisms. It is often considered a branch of medicine, the study of the mechanics of living beings, with an emphasis on applied use through artificial limbs, etc. |
| Biomedical research | The study of the human body in health and disease |
| Biophysics | The study of biological processes through physics, by applying the theories and methods traditionally used in the physical sciences |
| Biotechnology | It is the study of the uses of living cells and bacteria in industrial and scientific processes. it is a new and controversial branch of biology which studies the manipulation of living matter, including genetic modification |
| Building biology | Study of the indoor living environment |
| Botany | The study of plants |
| Cell biology | The study of the cell as a complete unit, and the molecular and chemical interactions that occur within a living cell. |
| Chronobiology | A field of biology that studies time-related phenomena in living organisms and their adaptation to solar and lunar related rhythms |
| Conservation Biology | The study of the preservation, protection, or restoration of the natural environment, natural ecosystems, vegetation, and wildlife |
| Cryobiology | The study of the effects of lower than normally preferred temperatures on living beings. |
| Developmental biology | The study of the processes through which an organism forms, from zygote to full structure. |
| Ecology | The study of the interactions of living organisms with one another and with the non-living elements of their environment. |
| Embryology | The scientific study of the development of embryos. (from fecundation to birth) |
| Entomology | The scientific study of insects |
| Environmental Biology | The study of the natural world, as a whole or in a particular area, especially as affected by human activity |
| Epidemiology | The scientific study of the spread and control of diseases. it is a main factor of public health research, it is the study of factors affecting the health and illness of human beings |
| Ethnobiology | The scientific study of the way plants and animals are treated/used by different human cultures |
| Ethology | The study of animal behavior. |
| Evolutionary Biology | The study of the origin and descent of species over time |
| Genetics | The scientific study of the ways in which different characteristics are passed from each GENERATION of living things to the next. the study of genes and heredity. |
| Herpetology | The study of reptiles and amphibians |
| Histology | The study of cells and tissues, a microscopic branch of anatomy. |
| Ichthyology | The study of fish |
| Integrative biology | The study of whole organisms |
| Limnology | The scientific study of bodies of fresh water for their biological and physical and geological properties. It is often regarded as a division of ecology or environmental science. |
| Mammalogy | The branch of zoology that studies mammals |
| Marine Biology | Marine biology is the scientific study of organisms in the ocean or other marine or brackish bodies of water. The study of ocean ecosystems, plants, animals, and other living beings. |
| Microbiology | The scientific study of very small living things, such as bacteria. It is the study of microscopic organisms (microorganisms) and their interactions with other living things |
| Molecular Biology | The study of biology and biological functions at the molecular level, some cross over with biochemistry |
| Mycology | The scientific studies of fungi (any plant without leaves, flowers or green colouring, usually growing on other plants or on decaying matter. MUSHROOMS and MILDEW are both fungi.) |
| Neurobiology | The study of the nervous system, including anatomy, physiology, even pathology |
| Oceanography | The scientific study of the ocean, including ocean life, environment, geography, weather, and other aspects influencing the ocean. |
| Oncology | The scientific study of and treatment of TUMOURS in the body. the study of cancer processes, including virus or mutation oncogenesis, angiogenesis and tissues remoldings |
| Ornithology | The scientific study of birds |
| Population biology | Study of the populations of organisms – most often referred as ecology, or used to point out biology adaptations, biology events sum up |
| Population ecology | The study of populations of organisms, including how they increase and go extinct (dynamics) |
| Population genetics | The study of changes in gene frequencies in populations of organisms |
| Paleontology | The study of fossils and sometimes geographic evidence of prehistoric life |
| Pathology | The scientific study of diseases, and the causes, processes, nature, and development of disease |
| Parasitology | The study of parasites and parasitism |
| Pharmacology | The scientific study of drugs and their use in medicine including practical application of preparation, effects of drugs and synthetic medicines. |
| Physiology | The scientific study of the normal functions of the living organisms and the organs and parts of living organisms |
| Phytopathology | Plant pathology (also phytopathology) is the scientific study of plant diseases caused by pathogens (infectious diseases) and environmental conditions (physiological factors) |
| Protistology | The scientific study of protists (very large, diverse group of organisms; all eukaryotic) |
| Psychobiology | Study of the biological bases of psychology |
| Sociobiology | Study of the biological bases of sociology |
| Structural biology | A branch of molecular biology, biochemistry, and biophysics concerned with the molecular structure of biological macromolecules |
| Virology | The scientific study of VIRUSES and the diseases caused by them |
| Zoology | The scientific study of animals and their behaviour including classification, physiology, development, and behavior |
