Choose the True Statements About the Evolution of Larval Dispersal

Multiple Choice

Choose the true statements about the evolution of larval dispersal in marine snails.

A) The evolution of non-dispersing snails is likely to hinder speciation.
B) Clades of non-dispersing snails are less species rich than those of dispersing snails.
C) Loss of structures in the transition from dispersing to non-dispersing may inhibit evolutionary reversal.
D) Possession of dispersing larvae is the ancestral state in snails.
E) Cladistics shows that there are more instances of the transition from dispersing to non-dispersing larvae than the reverse.