What is the correct option ?
Q.57. Which of the following features is not present in Periplaneta americana?
(a) Indeterminate and radial cleavage during embryonic development
(b) Exoskeleton composed of N-acetylglucosamine
(c) Metamerically segmented body
(d) Schizocoelom as body cavity
 

Dear student,      
Please find below the solution to the asked query                                                              

Periplaneta americana has determinate cleavage during embryonic development. Hence, option (a) is not a feature of ​Periplaneta americana. 

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