Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites

#Id: 1330

#XL - T Zoology

#Id: 9775

#XL - R Botany

#Id: 10724

#XL - R Botany

Feature of leaves

A typical leaf consists of three main parts;

a) Leaf base

b) Petiole

c) Lamina

Feature of leaves

leaf base and may bear two lateral small leaf like structures called stipules.

In some leguminous plants the leaf base may become swollen, which is called the Pulvinus

Feature of leaves

The lamina or the leaf blade is the green expanded part of the leaf with veins and veinlets. There is, usually, a middle prominent vein, which is known as the midrib.

#Id: 10775

#XL - R Botany

Tea

Botanical name- camellia sinensis

Family-Theaceae

Uses of tea

It contains vitamin B complex, nicotinic acid etc.

It is helpful in asthma due to the presence of Theophylline.

It is used as astringent and stimulant, diuretic, nervine, etc.

It has antimicrobial, anti-inflammatory and antioxidant property

Coffee

Botanical name-coffea arabica

Family-rubiaceae

Uses of coffee

It is a stimulating beverage with pleasant aroma.

It is blended with dried roasted root powder of chicory to flavor ice- creams, candies, cookies and pastries etc.

It is used as CNS stimulant.

The coffee pulp is used as cattle feed.

The wood of coffee tree is used to make boxes

#Id: 10083

#XL - T Zoology

The α subunit of each integrin is the primary determinant of its extracellular ligand specificity