Statement (i) is incorrect because the seminiferous tubules open into the rete testis, but then into the vasa efferentia, not directly into the vas deferens.
Statement (ii) is correct – the vasa efferentia carry sperms from the testes to the epididymis.
Statement (iii) is correct – the epididymis leads into the vas deferens, which ascends into the abdominal cavity.
Statement (iv) is incorrect – the vas deferens joins with the duct of the seminal vesicle (not the prostate) to form the ejaculatory duct.
Statement (v) is correct – the urethra starts from the urinary bladder and ends at the external urethral opening (meatus).