A) transformation of sexual individual into asexual
B) sexually matured with two regions atoke and epitoke
C) sexually immatured with two regions etoke and epitoke
D) all of the above
Correct Answer: B
Solution :
In some species of Neries (like-N.dumerilli), sexual maturation results in the marked differentiation of body into two parts : [a]Small anterior parts of body (atoke) and [b] Posterior gamete containing part (epitoke). The external changes make it so different that formerly, it was believed to be a separate genus, Heteronereis.
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