Sources of Modern History of India Archives refer to a collection of historical records and documents, usually primary source documents, which provide information of the past. Four types of archival materials – central government archives state government archives records of intermediate and subordinate authorities judicial records Some famous British travelers Read more…
The Rise of Nationalism in Europe (It is a compiled note based on NCERT class 10th History chapter) The series of prints by French artist Frederic Sorrieu French artist Frederic Sorrieu prepared a series of four prints in 1848 visualizing his dream of a world made up of democratic and social Read more…
Reproductive system in human Humans reproduce sexually and are viviparous (produce young ones rather than eggs). It goes through various steps and can be studied in two-part- i.e. male reproductive system and the female reproductive system The main processes in the reproductive system are the Formation of gametes, fertilization, pregnancy, and Read more…
Reproduction in Organisms Reproduction in Organisms: In simple language, the definition of reproduction is “The process by which living organisms produce their offspring for the continuity of their species is known as reproduction.” It is one of the most important characteristics of organisms. In this process, the genetic material transmits Read more…
Chemical classification of hormones Hormones can be classified on the basis of their chemical nature, composition, mechanism of action, effect, and endocrine glands. Hormones may be derived from any amino acids, cholesterol, or phospholipids. Classification of hormones on the basis of chemical nature On the basis of their chemical nature, Read more…
Endocrine Glands And Hormones Endocrine Glands And Hormones: The endocrine glands lack ducts and are hence called ductless glands. The secretions of the ductless gland are called hormones. Ernest Starling was the first person who coined the term “Hormone”. The scientific (new definition from NCERT) definition of Hormones is Read more…
Pollution Pollution is the unfavorable alteration of our environment, largely as a result of human activities (Southwick; 1976) We can explain it as ‘Pollution is an undesirable change in physical, chemical, and biological characteristics in our air, land, and water that is harmful or may harm future organisms’. Actions such Read more…
Important Environmental Laws Of India The environment in Indian Constitution The Constitution of India under Part IVA (Art 51A-Fundamental Duties) casts a duty on every citizen of India to protect and improve the natural environment including forests, lakes, rivers, and wildlife, and to have compassion for living creatures Our constitution Read more…
Pyramids In Ecosystem The pyramids in the Ecosystem are graphic representations of trophic levels showing the relationship between different organisms in an ecosystem. Types of Pyramids in Ecosystem There are three types of pyramids: Pyramid of number Pyramid of biomass Pyramid of energy Pyramid of number A pyramid of numbers Read more…
