Posted inCell Biology

TRANSPORT ACROSS PLASMA MEMBRANE

Membrane Function Membranes organize the chemical activities of cells. The outer plasma membrane – forms a boundary between a living cell and its surroundings – Exhibits selective permeability Controls traffic…
Posted inBiotechnology

BACTERIOPHAGE VECTORS

BACTERIOPHAGE Virus that infect bacteria is known as bacteriophage. It was discovered by Frederick W.Twort and Felix d’ Herelle . D’ Herelle coined the term bacteriophage meaning ‘bacterial eater’ to…
Posted inPlant Pathology

Brown or leaf rust of wheat

Puccinia triticina (P. recondita) DISEASE:  Leaf or Brown rust PATHOGEN:  Puccinia triticina (Syn. Puccinia recondita f. sp. tritici) HOSTS: Wheat, barley and  common Barberry (Berberis, Mahoberberis and Mahonia spp.) Symptoms The most common…
Posted inPlant Pathology

LATE BLIGHT OF POTATO

The disease was recorded simultaneously in Europe and North America in 1830. It became very well established in Europe by 1842 and was one of the important causes of the…
Posted inPlant Pathology

EARLY BLIGHT OF POTATO

POTATO •A member of the Solanaceae family, the cultivated potato (Solanum tuberosum) is closely related to the tomato, pepper, and eggplant. •Indians in Peru were the first people to cultivate…
Posted inPlant Pathology

Loose smut of wheat

Ustilago triticOrder: Ustilaginales Family: Ustilaginaceae Blossom penetration type Smut mean sooty (black) or charcoal like powder Responsible for heavy losses when susceptible varieties with infected seeds are grown year after year…
Posted inAnimal Physiology

The Mammalian Heart

The Heart is the organ that controls the circulatory system in mammals (and other animals). It pumps blood around the body.  Mammals have a double circulatory system, so the heart must pump blood to the lung and to the rest…
Posted inBryophytes

LIFE CYCLE OF  PORELLA

Table of content 1.Introduction 2.Systematic position of Porella 3.Habit and distribution 4.Morphological characters 5.Anatomy of stem 6.Anatomy of leaf 7.Reproduction of Porella 8.The Gametophyte stage 9.The male Gametophyte 10.The female…
Life History of Polytrichum
Posted inBryophytes

Life History of Polytrichum

Occurrence Polytrichum have worldwide distribution with 111 species. In India only 5 species are found and common species is P. alpinum. They are very common in cool temperature and tropical…