Cnidaria have no brain, so they Cannot move .a O .Cannot chase their food.
b O Must be solitary
c O .Cannot swim d
O Cannot be predators
.e O :Insects that are primitive have a life cycle that differs from advanced insects in that The adults can only feed on solid food
.a O There is no pupal stage
.b O Its larvae feed on different foods from the adults
.c O They take much longer to become an adult
dO The adult cannot fly .