Which of the following features is not present in Periplaneta americana ?
(a) Exoskeleton composed of Nacetylglucos amine
(b) Metamerically segmented body
(c) Schizocoelom as body cavity
(d) Indeterminate and radial cleavage during embryonic development
(a) Exoskeleton composed of Nacetylglucos amine
(b) Metamerically segmented body
(c) Schizocoelom as body cavity
(d) Indeterminate and radial cleavage during embryonic development