Chapter No. 18 Pharmacology

Pharmacology is the study of drug composition, properties and medical applications. The sources of drugs are also studied in pharmacology. Clinical pharmacology was present in the Middle Ages. Early pharmacologists focused on natural substances, mainly plant extracts. Pharmacology developed in Read More …

Chapter No. 17 Biotechnology

Humans have been making use of biotechnology since they discovered farming. This use extended from the planting of seeds to the control of plant growth and crop production. Animal breeding is also a form of biotechnology. Cross-pollination of plants and Read More …

Chapter No. 16 Man and His Environment

Every organism has its specific surrounding or environment with which it continuously interacts and remains fully adapted. An organism’s environment is the sum of physical (abiotic) and biological (biotic) conditions which influence that organism. The study of the interrelationship between Read More …

Chapter No. 13 Support and Movement

The organisms with greater sizes need support to keep their body mass as one unit. This is particularly true for the organisms that live on land. We know that movement and locomotion are characteristics of animals. “Movement” is a general Read More …