Agar osimlikda hosil bolgan mikrosporalarning 40% idan chang hosil bol

A) tuvaloq, nandu, oddiy vampir, miqqiy, karma
B) qiziltosh, kuropatka, korgalak, kojan, churrak
C) kolibri, nandu, emu, tuvaloq, kapachi
D) zorka, gelekonius, maxaon, podalariy, goza tunlami 20. (v15-104-32) Togolchaning har bir mikrosporasida qancha xromosoma bor. A) 8 B) 32 C) 16 D) 64 21. (v15-104-34) Sholi osimligi spermiylaridagi xromosomalar soni makkajoxori xromosomalarining n toplamidan 2 taga ortiq. Agar bir tup sholi osimligining 1 ta shingilida 27 ta don hosil bolsa, uruglangan markaziy hujayralarda jami xromosomalar soni qancha boladi? A)648 B)1620 C) 972 D)1896 22. (v15-106-28) Hayvonot dunyosi uchun mos keluvchi ma’lumotlarni korsating. 1) telofazada hujayra ortasida kondalang tosiq paydo bolib, hujayrani teng ikkiga boladi; 2) sitokenez hujayraning sitoplazma va plazmatik membranasi ortasida botiqlik hosil qilib, asta-sekin torayishi natijasida sodir boladi; 3) tuxum hujayra arxeosporaning dastlab meyoz, keyin mitoz bolinishidan hosil boladi; 4) hujayralarida anaerob va aerob nafas olish kuzatiladi; 5) ovogenezda dastlab mitoz, keyin meyoz bolinish natijasida tuxum hujayra hosil boladi; 6) qosh uruglanish kuzatiladi; 7) eukariot hujayraga ega; 8) ichki uruglanish kuzatiladi. A) 2, 5, 8 B) 1, 3, 6 C)1,4, 8 D) 3, 4, 7 23. (v15-107-2) Diploid navli qalampirda mikrosporalar hosil bolish jarayonining profaza I bosqichida barcha gomologik xromosomalarda konyugatsiya jarayoni kuzatilgan bolsa, xromatidalar tetradasi soni nechta boladi? A)12 B)36 C)48 D)24 24. (v15-107-26) Rivojlanishda davom etayotgan diploid bugdoy urugi endospermasida 40 ta hujayra hosil boldi. Shu endosperma hujayralaridagi jami xromosomalar soni nechtaga yetganini aniqlang. A) 1680 B) 720 C) 920 D) 840 25. (v15-108-14) Diploid navli makkajoxorida uruglanish jarayonidan song uning bitta sotasida 400 ta urug hosil bolgan. Markaziy hujayrani uruglantirishda ishtirok etgan * spermiylar soni qancha bolgan? A) 600 B) 400 C) 200 D) 800 26. (v15-110-14) Gozaning G. Herbatseum turida arxeosporasi (a), chang naychalarini hosil qiluvchi hujayra (b), endosperm hujayralari (c) kariotipini aniqlang. A) a-52, b-26, c-78 B) a-26, b-26, c-78 C) a-13, b-26, c-39 D) a-26, b-13, c-39 27. (v15-111-14) Togolcha murtak xaltasidagi hujayralarda jami qancha xromosoma bor? A)64 B)16 C)32 D)8 28. (v15-112-15) Yeryongoq osimligi somatik hujayrasi yadrosida makkajoxori diploid toplamiga nisbatan ikki barobar kop xromosoma mavjud. Yeryongoqning mikrosporasida (a), endospermidagi bitta hujayrada (b) va murtak xaltasidagi hujayralarda (c) jami qanchadan xromosoma boladi. A) a-20, b-80, c-160 B) a-20, b-60, c-160 C) a-20, b-60, c-120 D) a-40, b-60, c-80 29. (v15-113-30) Qaysi umurtqasiz organizmlarda zigota jinsining urgochi yoki erkak bolishi urgochilik gametalariga bogliq. A) apollon, gelekonius, podalariy, drozofila B) kolibri, nandu, emu, tuvaloq, kapachi C) qayin odimchisi, katta sadafdor, tovuskoz, gelikonius D) qiziltosh, kuropatka, korgalak, kojan, churrak 30. (v15-114-7) Diploid toplamli bugdoy navining arxeosporasida (a) va mikrosporasida (b) nechta xromosoma boladi. A) a-7, b-14 B) a-14, b-14 C) a-7, b-7. D) a-14, b-7 31. (v15-115-22) Qaysi javobda tuxum hujayraning uruglanishi bilan bogliq jarayonlar togri korsatilgan? 1) javdarda endospermning hosil bolishi; 2) asalarida erkak individning hosil bolishi; 3) qaragay qubbasida urugning vujudga kelishi; 4) zuhrasoch sporofitida sporaning rivojlanishi; 5) yasmiqda murtakning paydo bolishi; 6) povituxa itbaligining zigotadan rivojlanishi. A) 2, 4, 5 B) 1,4, 6 C)1,2, 5 D) 3, 5, 6 32. (v15-117-16) Diploid navli makkajoxorida uruglanish jarayonidan song uning bitta sotasida 400 ta urug hosil bolgan. Qosh uruglanishda ishtirok etgan spermiylar soni qancha bolgan. A) 800 B) 400 C)600 D) 200 33. (v15-117-35) Qalampirning diploid navi changdonidagi mikrosporalar soni uning somatik hujayrasi yadrosidagi xromosomalar sonidan 8 marta kop miqdorda yetildi deylik. Agar uruglantirish jarayonida faqat 192 ta spermiy ishtirok etgan bolsa, ular necha foizni tashkil etadi. A) 67,5 B) 75 C) 25 D) 12,5 34. (v15-118-35) Gingko biloba va baliqkozga xos umumiy xususiyatlarni aniqlang. 1) urugkurtak tuguncha devori bilan oralgan; 2) changlanish va uruglanishdan song urugkurtakdan urug hosil boladi; 3) urugidan kopayadi; 4) otkazuvchi toqimasi rivojlangan; 5) uruglangan tuxum hujayradan murtak hosil boladi; 6) ajdodi urugli qirqquloqlar hisoblanadi; 7) chetdan changlanish sodir boladi; 8) qosh uruglanishdan song tugunchadan rezavor meva hosil qiladi. A) 1, 2, 3, 6 B) 3,4, 5, 6, 8 C) 1,4, 5, 7, 8 D)2, 4, 6, 7 35. (v15-119-2) Diploid navli ma’lum bir osimlik xromosomlarining gaploid toplami n = 9 ga teng bolsa, bu osimlik oktaploid (8n) navli formasining quyidagi tana qismlari bolgan bolsa, shu jarayonda ishtirok etgan changdondagi birlamchi jinsiy hujayralar sonini toping. A) 800 B) 200 C) 320 D) 160