Biology has following branches:
Morphology
It is the study of form and structure of an organism. It has two types
i) External morphology is the study of external parts.
ii) Internal morphology is the study of internal parts. It is also called
anatomy.
Histology
It is study of tissues with microscope.
Cell Biology
It is the study of structure and function of cells.
Physiology
It is the study of different parts of organism.
Ecology
It is the study of relationship between organism and their environment. It is
also called environmental biology.
Taxonomy
It is the study of classification and naming of living things.
Embryology
It is study of all changes from zygote to organisms is born or hatched.
Genetics
It is the study of genes and transfer of characters from parents to offspring.
Paleontology
It is the study of fossils. It has two types:
i) Palaeo-botany is the study of fossils of plants.
ii) Palaeo-zoology is the study of fossils of animals.
Fossils are the dead remains of organisms preserved in rocks.
Biochemistry
It is the study of chemical reactions taking place in living things.
Biotechnology
It is the study of practical application of organism for the welfare of mankind.