biologiya 'ilm uz' 2020.03.24 @hamidov_za-1

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biologiya ‘’ilm uz’’ @hamidov_za 1) bitta pillaning og’irligi 4 g ipakchilikda 9 kg toza ipak olish uchun nechta pillani qayta ishlash lozim? a)25000 b)2250 c)20000 d)22500 2) kapalak tuxumdon devori hujayralarida 78 ta autasoma xramasomasi mavjud maydalanish bosqichida meridiyan va ekvatorlar nisbati 4:3 bo’lsa blastamerlardagi xramasomalarning jami soni nechaga teng? a)4492 b)10240 c)5120 d)9984 3) dnk molikulasida jami 1350 ta nukliatid bo’lib adinin va timin juftligi guanine va sitozin juftligidan 3,5 marta ko’p bo’lsa shu molikuladagi vadarod bog’lar soni molkuladagi fosfodiefir bog’lari sonidan nechta ko’p a)150 b)160 c)152 d)154 4) dnk molikulasida guanin va sitozin nukliotidlari orasida uch ta vadarot bog’ adinin va timin orasida ikki ta vadarod bog’ borligi etiborga olinsa ushbu fragmentda 1400 juft nukliotid mavjud unda guanine va sitozin juftligidan adinin va timin juftligi 2,5 barobar ko’p bo’lsa ushbu zanjirdagi adinin va timin orasidagi vadarod bog’lari sonini aniqlang? a)3400 b)3200 c)3800 d)2000 5) biosfera gameostaz holatining shakillanishida …

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2.bargi uzoq vaqtgach yashil rangini saqlaydi 3.qishda ham bargini to’tmay turadi 4.bargi qor tagida qishlaydi 5.barglari qarama qarshi joylashgan 6.ko’p yillik o’simlik? a)1,2,4,5 b)4,5 c)5,6 d)4,5,6 9) hasharotlar yordamida chanlanadigan etli (i) va etsiz(ii) mevali o’simliklarni aniqlang? 1.olma 2.o’rik 3.nok 4.g’o’za 5.beda 6.oqquray a)i-1,2,3 ii-4,5,6 b)i-1,2,3,6 ii-4,5 c)i-1,3 ii-4,5 d)i-4,5 ii-1,2,3 10) quydagi o’simliklarning qaysi birining urug’i unib chiqqandan so’ng oziq moddalar to’planadigan qismi bo’sh xaltachaga o’xshab tuproq ostiga qolib ketyadi? 1.namatak2.jumagul 3.javdar 4.o’sma 5.soya6.oqquray 7.qo’ng’irbosh a)1.2.3.4 b)2.3.7 c)2.3.4.6 d)7 11) g‘o‘zaning qaysi turlarida poyadagi barcha barglar yaxlit plastinkadan iborat emas? a) raymondi, klotsianum b) xirzutum, klotsianum c) barbadenza, xirzutum d) raymondi, xirzutum 12) ikkita gultojbargi qo’shilgan uchtasi erkin b’lgan oilaning o’zbekiston “qizil kitobi”ga kiritilgan turlarining 10% ni tashkil etuvchi turlarga ega bo’lgan turkumlarni belgilang? 1.zira 2.bo’ritaroq 3.nok 4.olma 5.qoqio’t 6.mingdevona 7.tugmachagul 8.bangdevona 9.yantoq a)2,7 b)4,6 c)2,8,9 d)1,3,6,8,9 13) quydagilardan qaysi biri tuxumsimon shakilga ega? 1. yerbag’ir tugmachagulning bargi 2. …

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biologiya ‘’ilm uz’’ @hamidov_za 1) bitta pillaning og’irligi 4 g ipakchilikda 9 kg toza ipak olish uchun nechta pillani qayta ishlash lozim? a)25000 b)2250 c)20000 d)22500 2) kapalak tuxumdon devori hujayralarida 78 ta autasoma xramasomasi mavjud maydalanish bosqichida meridiyan va ekvatorlar nisbati 4:3 bo’lsa blastamerlardagi xramasomalarning jami soni nechaga teng? a)4492 b)10240 c)5120 d)9984 3) dnk molikulasida jami 1350 ta nukliatid bo’lib adinin va timin juftligi guanine va sitozin juftligidan 3,5 marta ko’p bo’lsa shu molikuladagi vadarod bog’lar soni molkuladagi fosfodiefir bog’lari sonidan nechta ko’p a)150 b)160 c)152 d)154 4) dnk molikulasida guanin va sitozin nukliotidlari orasida uch ta vadarot bog’ adinin va timin orasida ikki ta vadarod bog’ borligi etiborga olinsa ushbu f...

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