Posted inPteridophytes

Fossil Pteridophytes:Lepidocarpon

CLASSIFICATION- Class-Lycopsida Order-Lepidodenrales Family-Lepidocarpaceae Genus-Lepidocarpon Definition Lepidocaron are the fossilized seeds of the natural genus,lepidodendron found in the form of compresion. Importance of fossil in  understanding plant evolution-  Fossil provide…
Posted inCell Biology

Plant Cell Wall

A novelty song of more than 50 years ago listed food items the writer said he disliked.  Each verse ended with the line, “I like bananas because they have no…
Posted inPhycology

Phaeophyta

General characters Of Phaeophyta The colour of brown algae varies from olive green to a deep shade of brown due to presence of golden brown xanthophyll pigment fucoxanthin. This is…
Posted inMicrobiology

Different Systems of Classification

Early Taxonomists 2000 years ago, Aristotle was the first taxonomist Aristotle divided organisms into plants & animals He subdivided them by their habitat ---land, sea, or air dwellers. Biological classification…
Posted inMicrobiology

Introduction to Microbiology

Microorganisms are present everywhere on earth which includes humans, animals, plants and other living creatures, soil, water and atmosphere  MICROBIOLOGY : the study of small living things. MICRO = small, BIO…
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…