The Periproct of Echinoderms is encircled by a ring of plates known as oculars and genitals, of which:
A. Both the ocular and genital are hexagonal shape
B. Both the ocular and genital are triangular shape
C. The ocular are hexagonal and genital are triangular or pentangular shape
D. The ocular are triangular or pentangular and genital are hexagonal shape
Answer:D
The Periproct of Echinoderms is encircled by a ring of plates known as oculars and genitals, of which:
A. Both the ocular and genital are hexagonal shape B. Both the ocular and genital are triangular shape C. The ocular are hexagonal and genital are triangular or pentangular shape D. The ocular are triangular or pentangular and genital are hexagonal shape