Arms are abuent in

Arms are absent in

In which class, arms are absent ?

Arms, spines and pedicellaria are absent in

In Ophinuroidea, branched arms are seen in

Arms present in Sepia are

Arms present in Sepia are

How many arms are there in octopus?

Which of the following options is correct :- A pair of adjacent angles have. (i)Common vertex (ii)Common Arm. (iii)Non Common arms are an opposite sides of common arms. (iv)Non Common arms are on the same side of common arms.