(23-24)22.05.2020

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23-sinov 1.quyidagi organizmlar orasida ovogenezining shakllanish davrida qo’shimcha qobiq rivojlanadiganlarini aniqlang. 1) iguana; 2) malla revun; 3) agama; 4)povituxa; 5)katta kivi; 6) qizilquyruq; 7) moyqurt; 8) latcha; 9) korsak; 10) forel; 11) murg’ob. a) 1,3,5,7,9 b) 2,3,6,8,11 c) 1,5,6,11,7 d) 1,4,5,7,10 2. og’izbo’shlig’i→xalqum→qizilo’ngach→jig’ildin→oshqozon→o’rta ichak→anal teshik 1) kipriklilar; 2) so’rg’ichlilar; 3)qoramol tasmasimon chuvalchangi; 4) kamtuklilar; 5) malyuskalar; 6) to’garak chuvalchanglar; 7) ko’p tuklilar; 8)gidra. hazm organlarini paydo bo’lish tartibida joylang. a) 8→2→7→4→7→6 b) 1→8→3→5→4→6→6 c) 1→1→6→7→7→6→6 d) 8→1→6→6→4→7→6 3. seleksioner tomonidan shunday tajriba o’tkazildi: ikki xar-xil gorillalarni chatishtirdi natijada olingan gorilla bolasini qon tarkibini tekshirdi va qoni tarkibida aglutinin oqsili yoqligini aniqladi. chatishtirishda qatnashgan gorillalar qon guruhini aniqlang, ularni bolasi o’zlariga donorlik qilishi mumkinmi? a) i:iv, mumkin b) i:ii, mumkin c) ii:iii, mumnik emas d) ii:iii, mumkin 4. tubandagi qaysi eukariot o’simlikning arxeosporasini zararlaydi. a) gommoz b) qorakuya zamburug’ c) zang zamburug’ d) vertitsillum 5. keltirilgan jarayonlardan qaysilari poleozoy eraning devon …

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suv orqali tarqaladi; 4) mikrosporasi bo’linayotganda xromatidlar tetradasi kuzatiladi; 5) to’pgullari tolning uru’gchi gullarini eslatadi; 6) fotosintez jarayoni yorug’likning optimal darajasiga bo’gliq; 7) biogen migratsiyaning uchinchi turida qatnashadi. a) 1,2,3,4 b) 2,3,5,7 c) 1,2,3,6 d) 3,5,6,7 8. magnoliyatoifalarni aniqlang. 1) suv nilufari; 2) mamont daraxt; 3) ebalak; 4) suv qaroqchisi; 5) ginko biloba; 6) zuxrosoch; 7) aspidistra; 8) suvkesar; 9) nitella; 10) sekvoyadendron; 11) rovoch; 12) qariqiz. a) 1,3,4,5,7,9 b) 1,3,7,11,12 c) 2,3,5,8,9,10 d) 2,4,6,8,10,12 9. berilgan ko’rsatkichlardan qaysilari boshoyoqli molyuskalarga mos keladi? 1) ko’zlari bosh miyaning yon o’simtasidan rivojlangan; 2) reflekslari murakkab va xilma-xil; 3) paypaslagichlari oyog’ining oldingi qismini o’zgarishidan hosil bo’lgan; 4) qadimgi vakillari kembriy davrida keng tarqalgan va faol harakatlangan; 5) dengizlarda tarqalgan ikkilamchi konsumentlar. a) 1,3,5 b) 2,4,5 c) 1,2,4 d) 2,3,4 10. noto’g’ri fikrlarni ajrating. 1) yelkaning oldingi muskullari somatik nerv sistemasi tomonidan boshqariladi; 2) katta yoshli odamda kichik oziq tishlar va miya qutisi suyaklari …

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fniya d) gulmoyi, kolarado, biy, bronza qo’ng’iz 13. shoyigul(1), sholg’om(2), qizil sho’ra(3) ni qish oylarida tuproqda nimasini uchratish mumkin. a) urug’larini; b) metamorfozlashgan ildizini; c) metamorfozlashgan novdasini; d) piyozboshlarini; e) poyasini a) 1-a,d; 2-b; 3-c b) 1-a,c; 2-a,b; 3-a c) 1-b,a; 2-c; 3-c d) 1-a,c; 2-b; 3-b 14. tajribada barcha belgilari bo’yicha geterozigota organizmlar chatishtirildi, chatishtirish natijasida 16 ta fenotipik sinf ajralgan bo’lsa u holda genatipik sinflar soni qancha. a) 16ta b) 27ta c)81ta d)128ta 15. peptid bog`larni parchalaydigan fermentlarini ajrating: 1) karboksipeptidaza;2) amilaza; 3)maltaza; 4)tripsin; 5)pepsin; 6)laktaza; a)1,5,6; b)2,3,4; c)1,5; d)2,4; 16. gavial (a), qizilto`sh (b) hamda triton (c) lardagi gastrulyatsiya turlarini aniqlang. 1–o`sib kirish; 2– qat – qat joylashuvi; 3– hujayralar migratsiyasi; a) a – 1, b – 3, c – 2 b) a – 2, b – 2, c – 1 c) a – 1, b – 2, c – 2 d) a – 3, b – …

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nsub; 8 – ochiq urug`li o`simliklarga mansub a) 2,3,5,7 b) 1,4,6,8 c) 2,3,6,8 d) 1,6,7,8 19. olchaning quyida berilgan qismlarida xromosoma soni a=16 ta, b=32 ta, c=48 ta emas. 1)endosperm 2)tuxum hujayra 3)po’kak 4)chang donasi 5)changdon 6)urug’chi 7)vegetativ hujayra 8)generativ hujayra 9)spermiy 10) murtak a) a-1,3,4,5,6 b-1,2,3,4,7,8,9 c-2,3,5,6,7,8,9 b)a-1,3,6,10 b-1,2,3,7,8,9 c-2,10 c) a-1,3,4,6,10 b-1,2,4,5,7,8,9 c-2,3,5,10 d) a-1,3,5,6,10, b-1,2,4,7,8,9 , c-2,10 20. gultojbarglari juda chiroyli bo`lgan, ishlab chiqargan efir moylariteriga tegsa pufakchalar hosil qiluvchi o`simlik qaysi oilaga kiradi (a) va qanday qoplamda o`sadi (b)? a) ra`nodoshlar (a) , tog` (b) b) archadoshlar (a), tog` (b) c) rutadoshlar (a), tog` (b) d) dukkakdoshlar (a), cho`l (b) 21. blastomerlari 16 taga yetgan tulki embrionida jami xromosomalar soni 608 ta bo`lsa, tana hujayrasida interfazaning g2 davridagi hujayra yadrosida nechta xromotid bo`ladi? a) 38 b) 76 c) 19 d) 152 22.juft (a) va tog’ (b) ayirish organlariga ega bo’lgan organizmlarni ko’rsating. 1-letyaga 2-kalmar 3-qiloyoq 4-kanna …

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23-sinov 1.quyidagi organizmlar orasida ovogenezining shakllanish davrida qo’shimcha qobiq rivojlanadiganlarini aniqlang. 1) iguana; 2) malla revun; 3) agama; 4)povituxa; 5)katta kivi; 6) qizilquyruq; 7) moyqurt; 8) latcha; 9) korsak; 10) forel; 11) murg’ob. a) 1,3,5,7,9 b) 2,3,6,8,11 c) 1,5,6,11,7 d) 1,4,5,7,10 2. og’izbo’shlig’i→xalqum→qizilo’ngach→jig’ildin→oshqozon→o’rta ichak→anal teshik 1) kipriklilar; 2) so’rg’ichlilar; 3)qoramol tasmasimon chuvalchangi; 4) kamtuklilar; 5) malyuskalar; 6) to’garak chuvalchanglar; 7) ko’p tuklilar; 8)gidra. hazm organlarini paydo bo’lish tartibida joylang. a) 8→2→7→4→7→6 b) 1→8→3→5→4→6→6 c) 1→1→6→7→7→6→6 d) 8→1→6→6→4→7→6 3. seleksioner tomonidan shunday tajriba o’tkazildi: ikki xar-xil gorillalarni chatishtirdi natijada olingan gorilla bolasini qon t...

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