Biology is the study of life and living things, including their structure, growth and origin. It is about the cellular basis of living things, the energy metabolism that causes the activities of life, and the genetic bases for inheritance in organisms. Also, it includes the study of evolutionary relationships among organisms and the diversity of life on earth. Biological science is classified into various branches, which depend upon the organisms to be studied. These are some main branches of biology Botany, Entomology, Ecology, Anatomy, Immunology, Limnology, Genetics, Histology, Biomechanics and Embryology. The study of plant life or phytology is known as botany. It's studies the life and development of fungi, algae and plants. Botany also probes into the structure growth, diseases, chemical and physical properties of the plant species. Also it implies the importance of study of plant life on earth because they generated food, fibers, medicines, fuel and oxygen. A person who is working in the study of botany is called a botanist. As a botanist, you study plants and apply you knowledge to teaching and research in agriculture, horticulture, and land use planning and medicine. Usually they investigate the effects of environmental factors such as rainfall, temperature and disease on plant growth, they grow plants under controlled conditions to assess the significance of environmental variables and prepare handbooks for plant identification. .
Entomology is the study of insects. Insects are one of the most successful and diverse groups of living organisms in world today. It concentrates on studying the taxonomy, features, adaptations, roles and behavior of insects. If you're interested about insects and their behavior you might consider yourself to be an entomologist. They study the life history, physiology, and behavior of insects. Ecology is the study of the relationship of living organisms with each other and with their natural environment.