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

(V20/21-113-4) Yashil iguananing embrional rivojlanishini ketma-ketiigini to'g'ri belgilang.

1) btastula; 2) xorda; 3) mezoderma; 4) zigota;

3. 
   spermatozoid; 6) blastamer; 7) suyak;
   

8. 
   gastrula.
   

1. 
   4, 6, 1,8, 3,2,7 B) 5, 4, 6, 8, 3, 2,7 C)4, 1,6, 8, 3, 2, 7 D)4 6, 1, 3, 8, 2, 7
   

89. 
    (v20/21-119-4) Murtak va homilaning rivojlanishi jarayonlarini tartib bilan belgilang; a) vorsinkaii parda ichida yana bitta parda o'sib, pufak hosil qiiadi; b) homila davri . boshlanadi; c) vorsinkalar va bachadon devori shilliq pardasi o'zaro yopishib, yo'ldosh hosil qiladi; d) vorsinkalar bachadon devori shilliq pardasiga chuqurroq botib kiradi; e) murtak parda sirtida vorsinkalar hosil bo'ladi; f) murtak pufak ichida suzib yuradi; g) murtak hujayralari murtak pardasini hosil qiladi; h) vorsinkalar murtak pardasi bachadon tomonida saqlanib qoladi.
    

1. 
   g, e, a, f, h, d, c, b
   
2. 
   g, e, a, h, f, d, c, b
   
3. 
   g, a, e, h, f, d, c, b
   
4. 
   h, e, a, f, h, d, b, c
   

89.