Yomgir chuvalchangining baqachanoqdan farqli belgilarini aniqlang. 1)

A) 4, 6

21. (v19/20-110-3) Yomgir chuvalchangining baqachanoqdan farqli belgilarini aniqlang. 1) tanasini mantiya teri orab turadi; 2) tanasida nerv tugunlari mavjud; 3) tuxumidan lichinka rivojlanadi; 4) qon faqat tomirlar ichida oqadi; 5) maxsus sezgi organlari rivojlanmagan; 6) germafrodit hayvon. A) 4, 6 B) 3, 4 0 2,6
D) 1, 5