Q.

The vital morphological and physiological units of mammalian kidney are
 a) Ureters                     b)    Uriniferous tubule
 c) Nephridia                  d)    Seminiferous tubules

1 A
2 B
3 C
4 D

Ans.

(b) Uriniferous tubules are the vital morphological and physiological units of mammalian kidney.