The Cytoplasm
The cytoplasm is a translucent mass of complex colloidal substances and is composed of water, protein, carbohydrate, lipoids and various inorganic compounds. It occupies a major part of. the cell and remains separated from the cell wall by a semi-permeable membrane, called cytoplasmic membrane or plasma membrane or...
Classification is a means of systematic arrangement or separation of large varieties or quantities of things into smaller groups on the basis of some similar and dissimilar characters or features present in them.
Crude drugs are natural substances which are obtained from a large variety of natural sources. They consist...
A complex tissue is made up of more than one type of cell-elements, which work together as a unit. There are two types of complex tissues:
Xylem tissuesPhloem tissues
which constitute a vascular bundle, the conducting system of the plant.
Fig. 8: Tracheids. A, tracheid with annual thickening; B-D, tracheids with bordered pits. (After Bhuya & Timm}.
Xylem...
Secretory tissues are composed of cells, which contain various kinds of secretions in them. Secretory tissues are of two types:
Glandular tissueLaticiferous tissue
Glandular Tissue
This tissue is composed of some special structures called glands, which contain some secretory or excretory products, Glands may consist of single isolated cells or small groups of cells with...
Organised plant drugs comprise whole plants or herbs or any of their organs or any morphological or anatomical part derived from them, which are composed of definite organized cellular structures. Thus. organized plant drugs may be conveniently grouped according to the plant organs from which they are derived. such...
Synonyms: Belladonna Herb, Belladonna Leaf, Belladonnae Herba, Deadly Nightshade Leaves, Foha Belladonnae
Botanical source: Belladonna consists of the leaves and other aerial parts of Atropa belladonna Linn. of the family Solanaceae, collected when the plant is in flower.
Geographical source: The plant is indigenous to central and southern Europe and is cultivated in England,...
Synonyms: Cannabis Indica, Indian Hemp, Marijuana
Botanical source: Cannabis consists of the flowering and fruiting tops of the female plants of Cannabis saliva Linn, an annua1 dioecious herb of the family Cannabinaceae.
Geographical source: Cannabis plant is indigenous to Central and Western Asia and is cultivated under Government control in many countries including India,...
Synonyms
Mentha, Mint Leaf
Botanical Source
Peppermint consists of the dried aerial parts of Mentha Piperita Linn., a herbaceous perennial with a creeping rhizome. It belongs to the family Labiatae.
Geographical Source of Peppermint Plant
The plant grows wild in most parts of North Africa, central and southern Europe, India, Bangladesh, and is cultivated in Britain,...
Synonyms
Euphorbia Pilulifera, Euphorbia Pilulifera, Herba Euphorbiae, Euphorbia Herba Euphorbia
Botanical source of Euphorbia Hirta
Euphorbia Hirta consists of the dried aerial parts of flowering and fruiting Euphorbia hirta Linn., an annual, low, almost creeping herb of family Euphorbiaceae.
Geographical source
The plant grows wild as a weed in many tropical countries including Nigeria,...