L. N. Isayev va P. F. Barovskiy qaysi kasalliklarni tugatishiga asos bo’ldi?

Baliqlarning xilma-xilligi.

1.Qayerlarda yashaydigan baliqlarning yog’du taratadigan a’zolari bo’ladi?....................................................................

2.Suv yuzasida yashaydigan baliqlarning qaysi muskullari kuchli rivojlangan?...............................................................
3.Skeletining tuzilishiga ko’ra baliqlar qanday sinfga ajratiladi?.......................................................................................
4.Tog’ayli baliqlar qanday tuzilgan?..................................................................................................................................
5.Tog’ayli baliqlarning jabra yoriqlari necha juft bo’ladi?.................................................................................................
6.Tog’ayli baliqlarga qaysi turkumlar kiradi?....................................................................................................................
7.Akulalarning tanasi qanday tuzilgan?..............................................................................................................................
8.Akulalarning tangachalari tashqi tomondan nima b-n qoplangan.?.................................................................................
9.Akulalarning jag’idagi tishsimon o’simtalar nimaga aylangan?.....................................................................................
10.Akulalar qanday yo’l b-n ko’payadi?............................................................................................................................
11.Akulalarning qancha turi bor?.......................................................................................................................................
12.Eng kichik akula va uning uzunligi?..............................................................................................................................
13.Uzunligi 18 mga yetadigan akula?.................................................................................................................................
14.Akulalar nimalar b-n oziqlanadi?...................................................................................................................................
15.Skatlarning tanasi qanday shaklda bo’ladi?...................................................................................................................
16.Skatlarning dum suzgichi nimaga aylangan?.................................................................................................................
17.Skatlar suvda qanday harakatlanadi?.............................................................................................................................
18.Bitta urg’ochi skat nechtagacha avlod beradi?..............................................................................................................
19.Skatlar nimalar b-n oziqlanadi?.....................................................................................................................................
20.Eng yirik skat?...............................................................................................................................................................
21.Skatlarning nechta turi bor?...........................................................................................................................................
22.Manta nimalar b-n oziqlanadi?......................................................................................................................................
23.Skatlar nima maqsadlarda ovlanadi?.............................................................................................................................
24.Baqra balig’ining suyak plastinkalari tanasining qayerida joylashgan?........................................................................
25.O’rta Osiyo suv havzalarida suyakli-tog’ayli baliqlardan qaysi vakillari uchraydi?.....................................................
26.Baqra balig’ining uzunligi va o’girligi?.........................................................................................................................
27.Soxta kurakburun qayerlarda uchraydi?.......................................................................................................................
28.Uzunligi 75 sm,og’irligi 2 kg keladigan baliq?.............................................................................................................
29.Qaysi baliq turi noyob tur sifatida muhofaza qilinadi?.................................................................................................
30.Dengizlarda losossimonlarning qaysi vakillari uchraydi?.............................................................................................
31.Bukri baliqning ikkinchi nomi?.....................................................................................................................................
32.Gulmoy balig’i qayerlarda keng tarqalgan?...................................................................................................................
33.Forel balig’ining ikkinchi nomi?...................................................................................................................................
34.Zog’ora baliq qaysi turkumga mansub?.........................................................................................................................
35.Mo’ylov baliq qayerlarda uchraydi?..............................................................................................................................
36.Tog’ daryolari va soylarida qaysi baliq tarqalgan?........................................................................................................
37.Uzoq sharq daryolaridan qaysi baliq kelib iqlimlashtirilgan?.......................................................................................
38.Panjaqanotli baliqlar turkumiga mansub baliq?.............................................................................................................
39.Latimeriya qayerlardan topilgan?..................................................................................................................................
40.Qaysi baliq turkumlarining go’shti va ikrasi yuqori baholanadi?..................................................................................
41.Jahon bo’yicha har yili qancha baliq ovlanadi?.............................................................................................................
42.Baliqlarning asosiy qismi qaysi suv havzalaridan ovlanadi?.........................................................................................
43.Baliqlarning ovlash kemalari nima deb ataladi?............................................................................................................
44.O’zbekistonda baliqlar qaysi suv havzalaridan ovlanadi?.............................................................................................
45.O’zbekistonda ovlanadigan baliqlar?.............................................................................................................................
46.Respublikamiz suv havzalariga qaysi baliqlar iqlimlashtirilgan?..................................................................................
47.Baliqlarning qadimgi ajdodi?.........................................................................................................................................
48.Baliqlarning moyi qanday ahamiyatga ega?..................................................................................................................
49.Ovlanadigan baliqlarning asosiy qismi nima maqsadda ishlatiladi?.............................................................................
50.Qaysi baliq turkumlari barcha suv havzalarida keng tarqalgan?...................................................................................