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DIVERSITY IN LIVING ORGANISMS

DIVERSITY IN

LIVING

ORGANISMS

ROBERT WITAKKER CLASSIFIED THE

ROBERT WHITTAKERRobert Whittaker classified the Living world into five kingdom on the basis of organisation inside cells, number of cells, presence or absence of cell and mode of nutrition.

1} kingdom monera- it includesAll the prokaryotes-ex-Bacteria ,blue green algae. 2} kingdom fungi- it includesMulticellular eukaryotes withCell wall and heterotrophic mode Of nutrition-ex- mushroom .

3} kingdom Plantae- it includesAll multicellular eukaryotes With cell wall and autotrophic Mode of nutrition-ex-algae, mosses.

4} kingdom animalia- it includesMulticellular eukaryotes withoutCell wall and heterotropic modeOf nutrition-ex- all animal.

5}Kingdom Protista- it includesAll kind of eukaryotes organismEx- alage,protozoans etc.

Kingdom Plantae is divided Into two part

1} cryptogams

2} phanerogams

Cryptogams- non floweringAnd non seed bearing plant.

Phanerogams- flowering and Seed bearing plants.8

Kingdom animaliaImportant terms 1}symmetry 2} layer in body wall 3} body cavity 4} supporting system 5} habitat 6} surfaces

Phylum poriferaAll are aquatic, freshwater or marine.They are cedentary.Reproduction is mostly by Budding.

Phylum coelenterata*All are aquatic mostly marine.*Mouth is surrounded by Tentacles having stinging cells.

Phylum nematoda*Body is cylindrical and Unsegmented. *All are parasites. *Digestive system is complete.

Phylum annelida* Body is cylindrical . *Free living or external parasite.* Sexes are separate but earth Worm is hermaphrodite .

Phylum arthropoda* Body is divided into head,Thorax,and abdomen*all of them have paired jointed appendages.*sexes are separate.

Phylum mollusca*mostly aquatic, some areTerrestrial like snail.*they have open circulatorySystem.*most of them has a Protective calcareous shell.

Phylum echinodermata *They are radially symmetrical.*All are marine.*All of them have spiny and scaly skin.

Phylum ProchordataAll of them are marine.They are bilaterally symmetrical.All of them have notochords.

Phylum chordataThey are having dorsal nerve Chord.They have notochord.They have post and tail.

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