Instead , the eggs hatch into larvae , which may be markedly different from the adult animal .
However , the latter are more complex anatomically than e.g. flatworms , and the small microlecithal eggs do not allow full development .
The eggs hatch into larvae , which may be markedly different from the adult animal .
However , the latter are more complex anatomically than e.g. flatworms , and the small microlecithal eggs do not allow full development .