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CramPuppy - Free Revision Notes » Igcse » Biology » Classification and Variation

Classification and Variation

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·       Classification is the segregation of species on basis of it or their properties

·       There are 5 kingdoms

o     Animal –-- Vertebrates and Invertebrates

o     Plantae

o     Fungi

o     Algae

o     Monera

·       Invertebrates Consist of

o     Protozoa – Unicellular and Microscopic

o     Annelida – Ring Worms

o     Nematodes – Worms without segments

o     Arthropods

§  Arachnids

§  Crustaceans

§  Insecta

§  Myria – pods

o     Molluscs – Which have a soft body but a hard shell surrounding it.

o     Platylelmenthis – Which r flat worms

o     Echonodeemata – Are invertebrates in which a limb can regenerate with the help of Totipotent Cells.

·       VERTEBRATES Consist of :

o     Repitles - Crocodile and Lizard. They are Oviparous or lay eggs and give birth

o     Amphibians – Frogs etc. Even they are Oviparous

o     Pisces – R fish they are also Oviparous

o     Aves – They r birds and are Oviparous

o     Mammals are Viviparous or give birth directly to the young

·       Mammals and Aves are Homeothermic or Warm – Blooded animals
The rest are Poikilothermic or Cold – Blooded animal

·       Algae are a group of unicellular organisms which have chlorophyll present in it .

·       Fungi  Moist/Damp area  || Either Saphrosites or Parasites  || Reproduce through spores
Cell wall
à made of Chitin  || Act on Substrate

 

 

Species :

Is a group of organisms that can breed together

·       It is Defined by:

Kingdom
Phylum
Class
Order
Family
Genus
Species

·     

Binomial System
Is The names in Latin Contain the Genus and the Species

For Eg. Pisum Satium

Pisum is the Genus and Satium Is the Species

 

 

 

 

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by: student
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Date: Wed, 8 Apr 2009 Time: 2:23 AM
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I'm a Student in an IGCSE school in Mumbai and I made this word file so that i can study better for my exams Hope u enjoyed it.


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