Polytrichum

Systematic Position Division: Bryophyta Class      : Bryopsida Order     : Polytrichales Family   : Polytrichaceae Genus    : Polytrichum Occurrence: Polytrichum have worldwide distribution. They are very …

Porella

Systematic Position Division: Bryophyta Class      : Hepaticopsida Order     : Jungermanniales Family   : Porallaceae Genus    : Porella Occurrence: Most species of Porella are distributed in …

General characters

The mosses and moss alies belong to a single division the Bryophyta. This division includes the most primitive of the green land plants. Bryophytes are structurally simple in both …

Agaricus

This is a large genus of fungi often synonymized with the term ‘mushrooms’, distributed mainly in temperate regions. Agaricus spp. are saprotrophs, growing in pastures and woodland litter. The …

Yeast Bread-making

The principle behind the leavening of bread dough by baker’s yeast is the same as in brewing, i.e. the anaerobic metabolism of glucose and other reducing sugars via pyruvic …

Transgenic Animals

NEW AND IMPROVED ANIMALS For thousands of years people have improved crop plants and domestic animals by selective breeding, mostly at a trial-and-error level. Woollier sheep and smarter sheep …