Productivity is the average rate of production of organic matter in a particular unit area at a given time, such as a day or a year. There are multiple factors in the natural system that can cause irregular changes in the rate of instantaneous rapid production. Therefore, in the case of normal research, only the … Read more
The guppy fish (Poecilia reticulata) is a beautiful and popular aquarium fish. It belongs to the family Poeciliidae under order Cyprinodontiformes of class Actinopterygii. It is native to Northeast South America, but now it is found all over the world. It prefers to live in smaller streams and pools. Systematic Position Phylum: Chordata Subphylum: Vertebrata … Read more
Hemorrhage is the escape of blood from a blood vessel or the heart. In rupture of the wall of a vessel, hemostatic mechanisms start to control the hemorrhage. A small hemorrhage may have no bad effect but an acute massive hemorrhage threatens the life. Chronic blood loss produces an iron-deficiency anemia. Hemorrhage may be local … Read more
Auxin is a indole radicle plant hormone which is produced by growing tip of a coleoptile and influence growth rate of the cells and also encourages the length of roots and stems of plants. This type of hormone contains different types of organic acid. The plant hormone auxin and its role were first discovered by … Read more
There are various synthetic organic compounds which are applied to plants to give some positive responses. These compounds are artificial plant hormones which help in a deficient concentration (< 0.001 M) in maintaining of growth and development of the plants. These are now widely used to get a better result in the field of agriculture … Read more
British physiologist William Harvey (1628) first of all expressed the plan of special type of system within the body. This system is called the blood circulatory system. In our body, this special system perform several functions like carrying food substances, respiratory gases, excretory wastes, and control body temperature and metabolic activities, prevent infection and coordinate … Read more