Which one of the following forms the blk of exoskeleton of an arthropod?
A. Epicuticle
B. Procuticle
C. Ectocuticle
D. None of these
Which one of the following forms the blk of exoskeleton of an arthropod?
A. Epicuticle
B. Procuticle
C. Ectocuticle
D. None of these