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  •  The initiation of cephalization is marked by   Option: 1 Asymmetry  

 The initiation of cephalization is marked by 
 

Option: 1

Asymmetry
 


Option: 2

Biradial symmetry
 


Option: 3

Radial symmetry
 


Option: 4

Bilateral symmetry
 


Answers (1)

best_answer

Bilateral symmetry : Such animals can be divided into two equal halves along any one plane, that is, either transversely or longitudinally. For example, annelids, arthropods, and vertebrates.

 Bilateral symmetry is characterised by the grouping of organs such that there is anterior-posterior and dorsal-ventral differentiation. When the ganglia are formed at the anterior position, they constitute a primitive brain. This is called cephalization.

 

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Rishi

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