Contribution of some Biologists
Aristotle (384-322) : The Greek Philosopher and biologist of 4th century B.C. have classified plants and animals. Plants as herbs, shrubs and trees. Animals are grouped according to their habitat and have also attempt to classify plants based on their medicinal properties.
Charak (1st century A.D) : Charak is known as father of Ayurveda. He listed the names of more than 200 kinds of animals and 340 kinds of plants in his book charaka samhita on Indian medicine.
Theophrastus (370-285 B.C) : A student of his great Greek Philosopher Aristotle known as father of Botany. His excellent contributions form the foundation of botanical knowledge. In his book " History Of Plants" he described 480 species of plants mostly cultivated. He classified plants on the basis of forms or texture into four groups. Herbs,shrubs and trees. He distinguished between annual,biennial and perennial plants.
John Ray (1627-1705) : An English taxonomist. He presented a system based on collecting of 18000 species in his book "Historia Plantarum". We find some of the first indications of a natural system of classification. He introduced the term species for one kind of living organisms forming natural groups.
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