Chemical nature of Crude Drugs Examples of different types of Glycosides Examples of Tannins Alkaloids Tests for evaluation of alkaloids Types of alkaloids On completion of this period, you would be able to know Objectives Alkaloids are basic Nitrogenous compounds generally Nitrogen is present in a he...
Some well-studied polyphenols include anthocyanins, isoflavones, cinnamic acid, and tannins. Some well-studied carotenoids include beta carotene, lutein, lycopene, and zeaxanthin. These are just a few phytochemicals. Examples will be discussed in the following sections. Anthocyanins Anthocyanins are ...
Conifers are now also planted in yards, gardens, and parks. They are raised inside as ornamental plants. Someconifer plants examplesare pines, firs, and spruces; these are used as Christmas trees in North America and western Europe. Summary Conifers are some of the species of trees that ar...
Let’s define the word“parenchyma”.Most of the functional tissues in plants and animals are parenchyma tissues. The word parenchyma came from the Greekparénkhyma, or from“parenkhein”, meaning“beside”,“to pour in”whereasénkhumameans“content of a vessel”. Parenchyma is a type of ti...
3.What are glycosides? Classify glycosides according to their chemical nature with examples. Write the identification tests and uses of glycosides. (December 2003) 4.Define Tannins. Give two examples of drugs containing tannins and mention their uses. (September 2002) Frequently Asked Questions...
(often red or orange); no pronounced smell; protection against being eaten prematurely, in the form of acids and tannins that are present only in the green fruit; protection of the seed against digestion, afforded by bitterness, hardness, or the presence of poisonous compounds; permanent ...
(often red or orange); no pronounced smell; protection against being eaten prematurely, in the form of acids andtanninsthat are present only in the green fruit; protection against digestion, afforded by bitterness, hardness, or the presence of poisonous compounds; permanent attachment; and, ...
Biology definition: Xylemis a type ofvascular tissuein plants. It is primarily involved in transportingwaterand minerals (from therootsto the shoot and leaves) and providing structural support. It is found in the stems and leaves of vascular plants.Etymology:Greek “xylon”, meaning “wood”.Com...
Aril, accessory covering of certain seeds that commonly develops from the seed stalk, found in both angiosperms and gymnosperms. It is often a bright-colored fleshy envelope and serves to attract animals for seed dispersal. Learn about arils and plants w
A soil seed bank is the natural storage of seeds in or on the soil of many ecosystems, which serves as a repository for subsequent generations of plants. Given the variety of stresses that ecosystems experience, soil seed banks are often a crucial surviv