Which of the following feature is used to identify a male cockroach from a female cockroach?

1. Presence of a boat shaped sternum on the 9th abdominal segment
2. Presence of caudal styles
3. Fore wings with darker tegmina
4. Presence of anal cerci

Select the correct statement from the ones given below with respect to Periplaneta americana.
1. Nervous system located dorsally, consists of segmentally arranged ganglia joined by a pair of longitudinal connectives
2. Males bear a pair of short thread like anal styles
3. There are 16 very long Malpighian tubules present at the junctions of midgut and hindgut
4. Grinding of food is carried out only by the mouth parts

In male cockroaches, sperms are stored in which part of the reproductive system?
1. Vas deferens
2. Seminal vesicles
3. Mushroom glands
4. Testes