72. (v19/20-109-30) Ildam kaltakesak mansub sinf vakillarida uchramaydigan belgilarni aniqlang.
1) tashqi uruglanish; 2) ikkita qon aylanish doirasi; 3) tuxum hujayrasida qalin qoshimcha qobiq bolishi; 4) diafragma muskuli; 5) ilik suyagi; 6) tort kamerali yurak.
A) 1,4, 5 B)1,3, 5
C) 2, 5, 6
D) 2, 4, 6