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 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”. Read more…
Pollution: introduction Pollution is the unfavorable alteration of our environment, largely as a result of human activities (Southwick; 1976) It can be explained as ‘Pollution is an undesirable change in physical, chemical, and biological characteristics in our air, land, and 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 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 Read more…
Ecosystem: The term ecosystem was first used in 1935, by British ecologist Arthur Tansley. Interaction of living and non-living of an area with each other, i.e. interacting organisms of an area together with the non-living constituents of the environment form Read more…
Life Process-4 Excretion Excretion: Removal of all harmful, unwanted products (especially nitrogenous wastes) from the body of an organism is called excretion. Different organisms use various strategies to perform the process. For example- Many unicellular organisms remove wastes by simple Read more…
Circulation in humans: As we know our body is made up of cells and nutrients and oxygen needed to survive, and wastes need to be removed from them. transportation of nutrients, gases, wastes, and other substances from one part of Read more…
Life Process- 2 Respiration Respiration: Every living organism needs energy to perform various life activities, and the process of respiration fulfills this energy requirement. During respiration, this food is broken down in the presence of oxygen, and energy is released Read more…
Nutrition In Organisms The process by which organisms obtain and utilize food for their growth, development, and maintenance is called nutrition and the chemical substances present in the food are called nutrients. Every organism needs energy to perform its Read more…