Population Population may be defined as a group of organisms belonging to one species which occupy a given area at a given time. Or , Number of individuals of one species occupying a specific geographical area. Few characteristics of population are – Population density, Birth rate, Death rate, Age distribution, Biotic potential, Rate of Dispersion … Read more
Blood group, also known as blood type, is a group of types of blood based on the presence and absence of blood group antigens in the surface (membrane) of the RBCs, and antibodies on the plasma. Karl Landsteiner, on the basis of blood transfusion results, proposed that blood of different persons has some biochemical differences. He … Read more
Definition of Blood Blood is defined as specialized connective tissue containing homogenous fluid composed of liquid substance known as plasma and the formed elements RBCs , WBCs and the platelets. It is slightly alkaline in nature pH=7.4 . Saltish in taste , heavier than water and viscous sticky fluid. Adult man has 5-6 litres and … Read more
What is Circulatory System? The Human Heart Pericardium and wall-layers of the heart Structure of Human Heart Blood vessels entering and leaving the heart, their apertures and valves Blood vessels entering the heart Blood vessels leaving the heart Heartbeat Circulation of blood through the heart Double Circulation Double Circulation- The Blood has to pass atwice … Read more