Definition and Importance of Biology Introduction Biology Definition

Definition and Importance of Biology

Introduction: Biology Definition § Biology is a science that concerned with the study of all organisms ; Human, animals, plants and microorganisms. § The term “Biology” derived from bios = life and logos = science.

Introduction: Importance of Biology § Biology science provides plentiful information about the structure, function and other vital process in organisms. § Biology helps in classifying all the organisms found on the earth's surface.

Introduction: Importance of Biology § Biology science plays a very important role in the medical field as it help to discover a lot of Pathogens. § Many medications are extracted from animal or plant.

Introduction: Importance of Biology § Biology has a huge participation in improving and protecting plants and animals wealth, Thus providing food for human. § Some biological studies helped to reduce pollution. For example, Use biological control rather than pesticide.

Disciplines & Subdisciplines of Biology § Biology Disciplines (based on the types of organisms) 1 - Zoology foucses on animals 2 - Botany ≈ ≈ 3 - Microbiology ≈ e. g. Bacteria, Fungi ≈ plants ≈ microrganism

Disciplines & Subdisciplines of Biology § Biology Subdisciplines (based on the scale at which organisms are studied) 1 - Morphology: Study of the total form (shape) of organism. 2 - Anatomy: Study of the structure of animal and plant organs.

Disciplines & Subdisciplines of Biology 3 - Cytology: Study of the structure and function of cells. 4 - Histolgy: Study of the structur and vairation of tissuses. 5 - Embrology: Study of the early development of organism.

Disciplines & Subdisciplines of Biology 6 - Genetics: study of explaining the similraties and differnces between parents and offspring and understanding how genetic traits pass from one generation to another. 7 - Physiology: study of the vital functions of living organisms. e. g. excretory system.

Disciplines & Subdisciplines of Biology 8 - Ecology: Study of organisms and their interaction with each other and their enviroment. 9 - Taxonomy: This science concerned with the classification of organisms in similar groups to facilitate the study and identify them.