Tuxumdonda urug'lanish jarayoni sodir bo'lganidan so'ng tuxum hujayra bachadon.,-■ nayiga o'tib, rivojlanishni davom ettiradi

(02-5-6) Mazkur jarayon qanday ataladi?

1. 
   sperma + tuxurrihujayra —> zigota;
   
2. 
   sperma + markaziy hujayra -» triploid.
   

A) changlanish B) urug'lanish

Cjovogenez Djqush urug'lanish

Ej gametogenez

10. 
    (03-3-23) Tuxum hujayraning boshqa hujayralardan asosiy farqi nimada?
    

1. 
   o'lchamining juda katta bo'lishi
   
2. 
   o'lchamining juda kichikligi
   
3. 
   xromosoma to'plamining diploid bo'lishi
   
4. 
   juda ko'p bo'lishi
   
5. 
   o'ichamining tez o'zgarib turishi
   

11. 
    (03-11-38) Urug' gulning qaysi qismidan hosil bo'ladi?
    

A) tuguncha B)endosperm

C) urug'kurtak D) gul o'rni

Ej zigota

12. 
    (03-11-39) Endosperm qaysi hujayralarning o'zaro qo'shilishidan hosil bo'ladi?
    

1. 
   tuxum + sperma
   
2. 
   markaziy + sperma
   
3. 
   tuxum + markaziy
   

Dj zigota + urug'kurtak

Ej spora + sporangiy

13. 
    (v9-113-35) S.G. Navashin qanday hodisani kashf etgan?
    

1. 
   vegetativ hujayradan chang nayining rivojlanishini
   
2. 
   qo'sh urug'lanish jarayonini
   
3. 
   endospermning triploidiigini .
   
4. 
   generativ hujayradan spermiylarning hosil
   

bo'lishini .

14. 
    (V9-129-32) M.S. Navashin qanday hodisani kashf etgan?
    

1. 
   vegetativ hujayradan chang nayining rivojlanish.ini
   
2. 
   qosh jjrug'lanish jarayonini
   
3. 
   endospermning triploidligini
   

Dj generativ hujayradan spermiylarning hosil bo'lishini

15. 
    (v12c-144-12)Tuxum hujayra buk o'simlikligining qaysi qismida yetiladi?
    

1. 
   chang donasida
   
2. 
   urug'chi tugunchasida
   
3. 
   sporangiyada
   

Dj qubbaning tangachalarida

16. 
    (v13-126-22) Makkajo'xorining barg epidermisida (a), ildizning o'sish konusi hujayrasida (b), endospermida (c), tuxum hujayrasida (d), markaziy hujayrasida (e) xromosomalar sonini juftlab ko'rsating.
    

1. 
   a-30, b-10, c-30, d-20, e-8
   
2. 
   a-20, b-10, c-30, d-20, e-30
   
3. 
   a-10, ЬИО, c-20, d-20, e-30
   
4. 
   a-20, b-20, c-30, d-10, e-20
   

17. 
    (v15-102-8) Qaysi organizm zotlarida zigota jinsining urg'ochi yoki erkak bo'lishi erkaklik gametalariga bog'liq.
    

1. 
   Kornuel, Zagorsk, Yakobin, Rod-aylend
   
2. 
   Pervomaysk, Pekin, Shvits, Santa-Gertruda
   
3. 
   Plimutrok, Nyugempshir, Shortgorn, Pervomaysk
   
4. 
   Simmental, Yaroslavl, MerinoS, Gereford
   

18.