A. Phallomere iv. The external genitalia

Explanation: Phallomere is an asymmetrical structurefound in cockroaches. It is a chitinous structure which constitutes the external genitalia in male cockroaches. It is absent in female cockroaches.

B. Gonopore iii. Opening of the ejaculatory duct

Explanation: Gonopore or gonadopore is a structure which is present in many invertebrate organisms like cockroaches. It is the opening pore of the ejaculatory duct.

C. Spermatophore ii. Bundles of sperm

Explanation: Spermatophore is a male reproductive accessory gland which is mainly found in the animal species of salamanders and arthropods. It has a mass i.e., a bundle of spermatozoa.

D. Ovarioles i. Chain of developing ova

Explanation: Ovarioles are the tubules in which ovum or ova development occurs. It is found in insects like for example cockroaches have ovarioles in which developing ova are present.