| Science | The methodical research and application of knowledge and understanding of the natural and social worlds using evidence-based techniques |
| Biology | The branch of science which deals with the study of living beings |
| Zoology | The branch of science which deals with the study of animals |
| Morphology | The branch of science which deals with the study of total general structures and forms including shape, size and appearance |
| Anatomy | The branch of science which deals with the study of internal structures after cutting or dissection |
| Histology | The branch of science which deals with the study of tissue i.e. microscopic anatomy |
| Cytology | The branch of science which deals with the study of cells and their organelles |
| Acariology | Study of tics and mites |
| Actinobiology | The branch of science which deals with the study of radiation effects on an organism |
| Aerobiology | Study of Flying organisms |
| Agroforestry | This branch deals with form of land used on which herbaceous crops and trees crops are cultivated |
| Agronomy | Science which deals with the crop plants |
| Agrostology | Study of grasses |
| Angiology | Science which deals with the study of blood vascular system |
| Anthology | Study of flowers |
| Anthropology | Study of origin, development and behavior Human |
| Apiculture | Study of bee keeping |
| Araneology | Study of spiders |
| Arthrology | Study of joints |
| Aschelitinthology | Study of round worms |
| Bacteriology | Study of bacteria |
| Batrachology | Study of frog |
| Biochemistry | Branch of science that deals with the study of chemical reactions in relations to life activities |
| Biometrics | Statistical analysis of different results of biological experiments |
| Biotechnology | Use of biological organisms in commercial processes for producing fine chemicals such as drugs, vaccines and harmones etc. on a large scale and at reasonable cost. |
| Bryology | Study of Bryophytes |
| Carcinology | Study of crabs and crustaceans |
| Cardiology | Study of heart |
| Chondriology | Study of Cartilage |
| Chromatology | Study of Pigments |
| Cnidology | Study of Coelenterata |
| Conchology | Study of shells |
| Craniology | Study of skulls |
| Cryobiology | Study of effects on life at very lower temperature |
| Dendrology | Study of shrubs and trees |
| Dermatology | Study of skin |
| Ecobiology | Study of problems of existence of life in outer space |
| Ecology | Study of relationship between organism and environment |
| Embryology | Study of embryo i.e. developmental stages after fertilization or birth of young ones |
| Endocrinology | Study of endocrine glands and their secretions |
| Entomology | Study of insects |
| Enzymology | Study of enzymes |
| Ethnology | Study of man-kinds |
| Ethology | Study of conditions of animals or behavior of animals, in a natural contest |
| Etiology | Study of diseases |
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Eugenics | Study of improvement of the human race by applying laws of heredity. It applied before birth. Eugenics is related with future generation |
| Euphenics | Study of improvement of the human race by drug treatment or gene engineering i.e. medical engineering of a genetic disorder |
| Euthenics | Study of improvement of the human race by improving the environment. It applied after birth and is related to the present generation |
| Evolution | The branch of science which deals with the study of origin of new from old i.e. origin, variation, inter-relationship between organisms of past and present days |
| Exobiology | Space biology is also known as exobiology |
| Floriculture | Study of flower yielding plants |
| Genetics | Study of heredity and variations |
| Gerontology | Study of growing old |
| Gynaecology | Study of female reproductive organs |
| Haematology | Study of blood |
| Helminthology | Study of helminthes |
| Hepatology | Study of liver |
| Herpetology | Study of lizards and other reptiles |
| Hypnology | Study which deals with sleep |
| Histochemistry | Study of chemical nature of tissues |
| Horticulture | Study of flowering and fruits plants |
| Ichnology | Study of fossil footprints |
| Immunology | Study of resistance of organisms against infection |
| Kalology | Study of sensory or sensari-emotional values, sometimes called judgments of sentiment and taste |
| Karyology | Study of nucleus |
| Lepidopterology | Study of moths and butterflies |
| Lichenology | Study of lichens |
| Limnology | Study of fresh water lakes, ponds and streams in relation with plants and animals |
| Malacology | Study of mollusks |
| Mammology | Study of mammals |
| Mastology | Study of breasts |
| Melanology | Study of pigments |
| Molecular Biology | Study of life sciences on molecular level (i.e. RNA and DNA level) |
| Mycology | Study of fungi |
| Myrmecology | Study of ants |
| Neonatology | Study of the new-born up to 1 month of age |
| Nephrology | Study of kidney |
| Neurology | Study of nervous system |
| Nidology | Study of nests of birds |
| Nisology | Study of diseases |
| Odontology | Study of teeth and gums |
| Olericulture | Study of vegetable yielding plants |
| Oncology | Study of cancer |
| Oneirology | Study of dreams |
| Ontogeny | Study of embryonic history |
| Oology | Study of egg of birds |
| Ophthalmology | Study of eyes |
| Organocology | Study of development of organs under embryology |
| Organology | Study of organs |
| Ornithology | Study of birds |
| Osteology | Study of bones |
| Otorhinolaryngology | Study of ear, nose and throat |
| Paedology | Study of larval stages |
| Palaezoology | Study of fossils and their distribution in time. |
| Palaeozoology | Study of fossils of animals |
| Palynology | Study of pollen grains in relation to taxonomy and evolution |
| Parasitology | Study of parasites |
| Pathology | Study of various diseases in human beings |
| Parazoology | Study of poifera (sponges) |
| Pedology | Study of soils |
| Pharmacognosy | Branch of science dealing with the medicinal plant |
| Pharmacology | Study of synthesis and effect of medicines on organisms |
| Phenology | Study of organisms as affected by seasonal climates e.g. of bird migration, opening of flowers etc. |
| Phrenology | Study of mental faculties of brain including feelings |
| Phycology (algology) | Study of algae |
| Phylogeny | Study of evolutionary history |
| Physiology | Study of functions of various parts within the organisms |
| Pisciculture | Study of rearing of fishes |
| Platyhelminthology | Study of flat worms |
| Pomology | Study of fruits |
| Poultry | Study which deals with keepings of foul |
| Proctology | Study of hind gut including rectum and anus |
| Protistology | Study of protests. Its field of study overlaps with more traditional disciplines of algology, mycology and protozoology |
| Pteridology | Study of pteridophytes |
| Rainology | Study of nose and olfactory organs |
| Saurology | Study of lizard |
| Sericulture | Silk industry concerned with culture of silk moth and pupa |
| Serology | Study of serum; interaction of antigens and antibodies in the blood |
| Sepentology (Ophiology) | Study of snakes |
| Silviculture | Study of development of forests |
| Sitology | Study of dietetics |
| Speciology | Study of species |
| Spermology | Study of seeds |
| Splanchnology | Study of visceral organs |
| Stomatology | Study of forget including buccal cavity and stomach |
| Synecology | Study of bony joints and ligaments |
| Taxi dermatology | Study of skin and stuffing |
| Taxonomy | The breach of science which deals with the study of classification of organisms |
| Teratology | Study of foetal malformations |
| Torpedology | Study of skates and rays |
| Toxicology | Study of narcotics and the influence of narcotics on various organisms |
| Traumatology | Study of wounds and turnover |
| Trichology | Study of hair |
| Trophology | Study of nutrition |
| Urobiology | Study which deals with preservation of deals bodies in liquids by chemicals |
| Urology | Study of wine including diseases and the abnormalities of uninary and urino-genital tract |
Virology | Study of virus |
| Zoogeography | The branch of science which deals with the study of the distribution of animals on earth |
| Biophysics | Study of physical aspects of living organisms |
| Cytogenetics | Study of cytological basis of inheritance |
| Ctetology | Study of acquired characteristics of organisms |
| Ichthyology | Study of fish and it’s culture |
| Kinesiology | Study of muscle movements |
| Phytogeography | Study of plants distribution on earth |
| Palaeobotany | Study of distribution and characteristics of fossils |
| Psychobiology | Study of behavioural aspects of animals |
| Sarcology | Study of muscles |
| Syndesmology | Study of bone joints and ligaments |
| Tectology | Study of structural organization of body |
| Zoophytology | Study of drifting micro-organisms such as diatoms. |
