Male Cockroach is identified by the presence of

The male cockroach can be identified by the presence of :

Male cockroach has

The male cockroach can be idenfitfied by the presence of

The adult male of Ascaris can be identified externally by the presence of

The male and female cockroaches can be identified by the difference in their morphological features. Name this phenomenon

Male cockroach can be identified from the female by the presence of

A female cockroach can be differentiated from a male cockroach, due to the presence of :