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 an ecosystem. This shows the relationship between organism and their 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 diffusion from the body’s surface into the surrounding water. The 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 our body to the other part, is carried out by 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 during respiration. Breathing- exchange of gases between the animal body 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 life processes, and these energies are acquired by proteins and Read more…