Modern Classification Summary
. The two-kingdom classification has certain demerits, particularly with reference to lower forms of life which show common features with both plants and animals. In 1858 Earnt Haeckel proposed the three-kingdom classification in which apart from Plantae and Animalia, a new ..
Heliozoans
with a glassy silica shell. Eg: Actinophryx fig. 8.15 - Amoeba and Elphid..
with a glassy silica shell. Eg: Actinophryx fig. 8.15 - Amoeba and Elphid..Classification
The division Bryophyta has been divided into three classes namely: Hepaticae - Commonly called Liverworts Anthocerotae - Commonly called Hornworts Musci - Commonly called Mosses . fig. 8.29 - Common Examples of Bryophy..
The division Bryophyta has been divided into three classes namely: Hepaticae - Commonly called Liverworts Anthocerotae - Commonly called Hornworts Musci - Commonly called Mosses . fig. 8.29 - Common Examples of Bryophy..Summary
In the modern system of classification, living organisms are grouped under five kingdoms, as proposed by Whittaker (1966). The Kingdom Monera includes bacteria and blue green algae, both of which possess prokaryotic cells. Bacteria are unicellular prokaryotes t..
Animal Diversity
Animal Diversity - Among the members of the animal kingdom, about 95% do not posses a backbone (or vertebral column) and hence are described as invertebrates. The remaining animals represent a group called chordates, which posses a solid supporting structure on the dorsal side o..
The Linnaean Hierarchy
. Each phylum or division has the next taxon called Class . The members of each class exhibit certain distinguishing characters that are unique only to them. In the same way, using comparable criteria of similarities and relationships, each class can be divided into orders , each order in..
. Each phylum or division has the next taxon called Class . The members of each class exhibit certain distinguishing characters that are unique only to them. In the same way, using comparable criteria of similarities and relationships, each class can be divided into orders , each order in..Phaeophyta
It includes a much-advanced group of algae , which are mostly marine forms. They are commonly called as 'sea weeds'. The plant body may be filamentous or may show root like hold fast, stemlike stipe and leaf like blades . Many of them have air bladders which keep them afloat by providing buoyancy. ..
It includes a much-advanced group of algae , which are mostly marine forms. They are commonly called as 'sea weeds'. The plant body may be filamentous or may show root like hold fast, stemlike stipe and leaf like blades . Many of them have air bladders which keep them afloat by providing buoyancy. ..Cell Structure
Each cell whether in a unicellular form like Gleocapsa or multicellular form like Nostoc, has a definite cell wall. Most often it is surrounded by a thin or thick mucilagenous sheath. The inner layer of cell wall has a chemical composition similar to bacterial cell, made up of peptidoglycans. The c..
Each cell whether in a unicellular form like Gleocapsa or multicellular form like Nostoc, has a definite cell wall. Most often it is surrounded by a thin or thick mucilagenous sheath. The inner layer of cell wall has a chemical composition similar to bacterial cell, made up of peptidoglycans. The c..Read the following passage carefully:
The Best Advice I Ever Had By Vijaya Lakshmi PanditThe Best advice I ever had came from on of the greatest souls the world has ever known - Mahatma Gandhi- on a sunny afternoon a decade ago. Most people pass through a period of anguish when their belief in humanity is at a low ebb. I was in suc..
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