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Introduction about Streak Plate Technique Microbial populations exist with a mixture of many other cell types. In the laboratory, it is possible to divide the population into pure cultures. Pure culture contains only one type of organism and allows us
The leaf is a dorsi-ventrally compressed, lateral appendage of the stem, produced at the nodes. But here are some modifications in Leaves. There are main three parts of the leaf that are as follows, Leaf Base Petiole Lamina Read More: Leaves
The epidermal tissue system forms the outermost skin or epidermis (epi = upon, derma = skin) of all plant organs beginning from the underground roots to the stem, leaves, flowers, fruits and seeds. This layer represents the point of contact
Vascular Tissue System Xylem Introduction It is a characteristic of the higher cryptogams ie pteridophytes and all groups of the spermatophytes (Angiosperms and Gymnosperms). The vascular tissue system consists of a number of vascular bundles which are found to be
Introduction Ringworm is a common skin disease caused by a fungus. It is called “ringworm” because it can cause round (ring-shaped) rash that is usually red and stinging. Anyone can get a ring. The fungus that causes the disease can
Here is all about the ABO blood group – ABO Blood Group and History of Blood Transfusion – Blood transfusion experiments have been performed for hundreds of years. Many patients died and it was not until 1901, when Ryan Strian
Types of leaves There are mainly two types of leaves as follows, Simple Leaf Simple leaves are those in which a single leaf blade or lamina is present. Simple leaves are those in which a single leaf blade or lamina
Dry Heat – Air heated above 1600 C is used for sterilization. Killing due to oxidation of organic compounds /burning of ashes. Has low penetrating power. Needs more time for sterilization (e.g.dry heat takes 8 hours to sterilize at 1200
Aberration In a Lens system Aberration: The deviation produced from the actual size, shape, and shape of the image is called the Aberration produced by the lens. Disorders produced by variations in the direction of the indicator with light wavelengths