• Biology: Study of living organisms.
• Botany: Study of plants.
• Zoology: Study of animals.
• Biotechnology: Use of organisms or their parts to produce useful products like medicines.
• Ethology: Study of how animals behave, particularly in their natural environments.
• Morphology: Study of internal and external structures of organisms (plants and animals) organs.
• Histology: Study of tissues.
• Cytology: Study of cells and cell organelles.
• Anatomy: Study of internal organs of plants and animals.
• Embryology: Study about male and female gametes, fertilization and development of embryo.
• Microbiology: Study of micro-organisms.
• Physiology: Study of various Body functions and processes (e.g. respiration, photosynthesis, growth etc.).
• Ecology: Study of relationship of living beings (plants and animals) with environment. Also called Environmental biology.
• Palynology: Study of microspores or pollen grains.
• Palaeontology: Study of fossils.
• Molecular Biology: Study of nature of biomolecules and their interactions in an organism
• Astrobiology: Study of extra-terrestrial life.
• Biochemistry: Study of bio-chemical process (e.g. diffusion, osmosis etc.)
• Biophysics: Study of application of physics principles in life processes.
• Taxonomy: Study of identification, nomenclature and classification of animals and plants.
• Genetics: Study of genes and inheritance
• Bacteriology: Study about bacteria.
• Virology: Study about viruses.
• Eugenics: Study of application of knowledge of genetics to the human welfare.
• Cioinformatics: information processing of data in molecular biology by using computers.
• Phytogeography: Study about distribution of plants in different parts of the globe.
• Mycology: Study about fungi.
• Mammology: Study of Mammals
• Phycology: Study about algae.
• Bryology: Study of bryophyte plants.
• Pteridology: Study of Pteridophytes plants.
• Entomology: Study of insects
• Neurology: branch of medicine that deals with the anatomy, functions, and organic disorders of nerves and the nervous system
• Neuroradiology: Branch of radiology focuses on the diagnosis and abnormalities of nervous system.
• Paleoanthropology: Study of human origins and evolution.
• Sociobiology: Study of social behavior based on evolutionary theory.
• Osteology: Study of bones.
• Ichthyology: Study of fishes.
• Toxicology: Study about poisons.