how do i prepare th chapter diversity in living organisms for sa2 its difficult

@ Shivam : First of all do not panic. The chapter is very easy once you understand how to go about it.

First off all go through the flow diagrams given in the study material. This will enable you to understand how the organisms are classified. Do not try to read and learn the chapter in one go. Read the topics in step wise manner try to make headings and subheading of topics you are reading.

Hope this helps!!

Kudos to your friends you have done great efforts to help you!!

@ Others : Good work. Keep posting!!

Cheers!!

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Porifera	Coelenterate
They are mostly marine, non-motile and found attached to rocks. They show cellular level of organization Examples - Spongilla, Euplectella etc	They are excusively merine animals that either leave in colonies or have a solitary life span. They show tissues level of organisation Examples - Hydra, Sea Anemone, Corals etc.

Annelid animals	Arthropods animals
The circulatory system of Annelid animals is closed The body is divided into several identical segments	The Arthropods have an open circulatory system The body is divided into few specialized segments

Amphibians	Reptiles
They have dual mode of life. Scales are absent. They lay eggs in water.	They are completely terrestrial. The skin is covered with scales. They lay eggs on land.

Aves group	Mammalian group
Most birds have feathers and they possess a beak. They lays eggs, hence are oviparous.	They do not have feathers and beak is also not present. Some of them lay eggs and some give birth to young hence they are both viviparous and oviparous