Stas-Otto method A method of extraction of alkaloids from plants and animal bodies: the substance is digested in alcohol and tartaric acid, the fatty and resinous matters are precipitated with water, the fluid is made alkaline, and the alkaloids are extracted with ether or chloroform...
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Human consciousness and behavior are an interesting topic since they are determined and controlled by the brain. Conscio..
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
This lesson is about the methods used for ecological research, such as quadrat and transect sampling, canopy fogging, an..
