$\begin{array}{1 1} \text{a. Earthworms and Leeches are hermaphrodite organisms} \\ \text{b. Young ones of animals which have external fertilization receive little or no parental care.} \\ \text{c.If the egg is not fertilized, it is thrown out of the body along with the lining of the uterus as menstrual flow.}\\ \text{d. *** organs in human beings are formed at puberty.}
\end{array} $