What are the 13 Branches of Biology?

Biology is the study of life. It explores the properties, structure, and functions of life, as well as the diversity of living organisms. Biology is the most highly organized science, and the most fundamental. It is the study of life from the most basic forms to the most complex forms. Biology is broken into 13 branches. Continue reading to learn about these branches.

What are the 13 Branches of Biology?

The 13 branches of Biology are the following:

  • Ecology
  • Zoology
  • Genetics
  • Anatomy
  • Microbiology
  • Biochemistry
  • Botany
  • Parasitology
  • Radiobiology
  • Biophysics
  • Taxonomy
  • Molecular Biology
  • Physiology

What is Biology?

Biology is the scientific study of life, living organisms, and their interactions with their environment. It is the study of life from a scientific perspective and deals with the structure, function, growth, development, origin, evolution, distribution, taxonomy, ecology, and behavior of life. 

Biology is a natural science, meaning that it is applicable to all aspects of life and that it is the systematic study of living organisms. It is considered to be the most fundamental of the natural sciences and one of the most important.

Biology is an important science because it helps us to understand how life works and how it can be used to solve problems. For example, the study of genetics has helped us to understand more about human diseases.

What are the five levels of organization in biology?

Biology is the study of life and living organisms. It is the science of all living organisms. There are five levels of organization in biology. They are: 

  • Biosphere – The biosphere includes all living things and their environments. 
  • Cell – Cells are the smallest living units and are the building blocks of all living things. 
  • Organism – The organism is the living unit that has the ability to grow, reproduce, and respond to stimuli. 
  • Population – Populations of organisms are the groupings of individuals that share the same genetic characteristics
  • Ecosystem – An ecosystem is a community of organisms that interact with one another and the environment.

 Biology is a broad field of study that includes the following branches:


Ecology is the study of interactions between organisms and their environment. The word ecology comes from the Greek word oikos, which means “house.” Ecology is about understanding how the house (environment) affects the inhabitants (organisms).

Ecology is a broad and interdisciplinary field, with many applications in other fields, such as medicine, economics, and environmental science.


Zoology is the scientific study of animals. It is a branch of biology that studies the animal kingdom, its morphology, physiology, and behavior. This field of study has a variety of different sub-disciplines, such as animal behavior, marine biology, and mammalogy. 

Zoologists also study a wide range of other topics, such as the impacts of human activity on animals and the effects of climate change on animals.


Genetics is the study of how traits are passed from parents to their children. The genes that each individual inherits from their parents can have a significant impact on the individual’s physical and mental characteristics. 

Genetic disorders can occur when there is a change in the gene sequence which causes an abnormality in development. The study of genetics is important for understanding the genetic makeup of an individual and how it might affect their health.


Anatomy is the study of the structure of living things. It is a branch of biology and medicine that is concerned with the structures that make up living organisms. It is a fundamental science that forms the basis for understanding how living organisms work. 

The study of anatomy is usually divided into two main branches: gross anatomy and microscopic anatomy. Gross anatomy looks at the entire body, while microscopic anatomy looks at cells, tissues, and organs on a smaller scale.


Microbiology is the study of microscopic organisms, their cellular structure, physiology, ecology, and interactions with other organisms. Microbiology is the study of microorganisms, which are generally defined as anything smaller than 100 micrometers in size. 

The word comes from two Greek words- μικρός (mikros) meaning small and βίος (bios) meaning life. Microorganisms are an important part of our diet because they play a role in food digestion and nutrient absorption.

Microorganisms are also an important part of our ecosystem because they break down organic material and make nutrients for plants, animals, and other microorganisms. 


Biochemistry is the study of chemical processes in living organisms. The study of biochemistry includes many topics, such as the structure and function of biological molecules, the mechanism of molecular reactions, and the relationship between genes and proteins. 

Biochemistry is also concerned with the changes that take place in living organisms when they are exposed to different conditions.


Botany is the study of plants. It is an important part of biology and ecology, and it is also a major field of research in many other disciplines. This means that there are many different types of botanists and their research focuses on different aspects of botany. 

There are also many different ways to study plants, such as studying them from a historical perspective, from a cultural perspective, or by looking at them in relation to the environment.

Botanists study the evolution, structure, identification, nomenclature, classification, and ecology of plants. They also classify and study plant life cycles and plant parts, such as flowers, leaves, stems, roots, and fruits.


Parasitology is the study of parasites, which are organisms that live in or on other organisms and derive their nutrients from the host. Parasites are a major health concern for humans, animals, and plants.

There are two main types of parasites: external parasites, which live on the outside of an organism, and internal parasites, which live inside an organism.


Radiobiology is the study of the molecular and cellular effects of radiation. Radiobiology is a science that is used in many fields such as medicine, biology, and environmental science.

The impact of radiation on human health is studied in this field, which includes radiation therapy, imaging, and radiotherapy. Radiobiology is also used to study the effects of ionizing radiation on non-living matter.


Biophysics is the study of the physical properties of living systems. It is an interdisciplinary field that spans physics, chemistry, and biology. It is often used to understand how biological systems function. Biophysics can also be applied to medicine and health care.


Taxonomy is the classification of living things into groups based on shared characteristics. The first system of classification was developed by Carl Linnaeus in 1735. 

Taxonomy is a system of categorizing living things into groups based on shared characteristics, such as species, genera, families, orders, classes, phyla, and kingdoms. The term comes from the Greek word τάξις, meaning “arrangement” or “classification.”

Molecular Biology

Molecular biology is the study of the physical and chemical processes that govern life at the molecular level. It is the study of how molecules interact with each other to carry out biological functions. 

This field of science seeks to understand how life works on a molecular level, which could lead to new discoveries and treatments for diseases.


Physiology is the study of the functions of living organisms. It is the scientific study of how living organisms, and their parts, interact with their environment and each other.


Biology is the study of life. This includes the study of living things, living processes, and living environments. Biology is a broad field of study that includes many different scientific disciplines. Biology is such a broad field because everything in the world is either alive or has the potential to become alive. Biology also includes the study of the natural world and it is considered to be the study of life.

Frequently Asked Questions (FAQs): What are the 13 Branches of Biology?

Who is the father of biology?

Aristotle’s writings on biology, zoology, and botany have had a profound impact on our understanding of the world around us. Aristotle was born in 384 BC and lived to be 80 years old. He was a student of Plato and a teacher of Alexander the Great.

Who is the father of botany?

Theophrastus is known as the Father of Botany. He was born in 372 BC and was a Greek philosopher and a naturalist.

What are the 3 major branches of biology?

The 3 major branches of biology are botany, zoology, and microbiology.


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