Perfect biology and chemistry Kanalimiz obunachilari uchun maxsus

a)qobon, b)irbis, c)mallabosh, d)katta kurakburun,

e)kichik kurakburun, v)valeriana h)oqsovrinjon,

g)kichik taqaburun, j)katta taqaburun. A)1j,g;2-c;3-h,v;4-e,d;5-b,a; B) 1-c;2- j,g;3-h,v;4- b,a;5e,d;

C) 1-j,g;2-c;3-d,e;4-v,h;5-a,b; D)1-a,b;2-c;3-h,v;4e,d;5-j,g;

23.Mezozoy erasining trias davridagi hukmron turlarni tanlang.

1)kordait, 2)plaun, 3)pixta, 4)baobab, 5)psilofit, 6)baobab, 7)sagovnik, 8)archa, 9)zarafshon archa 10)ginko biloba.

A)1,5,6,8 B)1,3,4,10 C)10,9,5,4 D)5,3,4,2

24.Atmosferada erkin kislorodning bo’lishi organizmlarga qanday ta’sir qilgan?


1)aerob nafas olisga o’tish 2)moddalar almashinuvining sekinlashuviga 3) moddalar almashinuvining jadallashuviga 4)atmosferada CO2 ning ko’payishiga 5)prokariotlarning soddalashuviga 6)eukariotlarning paydo bo’lishiga.