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Carolus Linnaeus

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Question 1
Which organisms are called primitive and how are they different from the so-called advanced organisms?

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$\begin{matrix} S l . N o & P r i m i t i v e O r g a n i s m & A d v a n c e d O r g a n i s m i . & A n o r g a n i s m w h i c h h a s a s i m p l e b o d y & A n o r g a n i s m w h i c h h a s c o m p l e x b o d y s t r u c t u r e a n d a n c i e n t b o d y d e s i g n o r & s t r u c t u r e a n d o r g a n i s a t i o n w i t h a h i g h l e v e l f e a t u r e s t h a t h a v e n o t c h a n g e d m u c h o v e r & o f d i v i s i o n o f l a b o u r; b y f o r m a t i o n o f o r g a n s a p e r i o d o f t i m e i s c a l l e d p r i m i t i v e . & a n d o r g a n s y s t e m i s c a l l e d a d v a n c e d o r g a n i s m s . i i . & T h e y e v o l v e d m u c h e a r l y & T h e y a r e c o m p a r a t i v e l y r e c e n t \end{matrix}$

Example : Amoeba is more primitive than starfish

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