1.Bo’shliqchililarga qaysi sinflar kiradi?............................................................................................................................
2.Gidra qanday suvda hayot kechiradi?..............................................................................................................................
3.Qaysi hayvoni ham akvariumlarda uchratish ham mumkin?...........................................................................................
4.Gidra tanasining uzunligi va shakli?................................................................................................................................
5.Gidra tanasining ostki qismi nima deb ataladi?...............................................................................................................
6.Gidraning og’iz teshigi nimalar b-n o’ralgan?.................................................................................................................
7.Gidra suvdagi narsalarga nima orqali yopishib oladi?.....................................................................................................
8.Suv tupidagi narsalarga yopishib hayot kechiradigan organizmlar nima deb ataladi?....................................................
9.Gidra tanasi qanday simmiteriyali.?................................................................................................................................
10.Gidra tanasi necha qavat hujayradan tashkil topgan?....................................................................................................
11.Gidra tanasining tashqi va ichki qavati nima deb ataladi?.............................................................................................
12.Gidra tanasining ichki qismi nima deb ataladi?............................................................................................................
13.Gidraning ichak vazifasini nima bajaradi?....................................................................................................................
14.Gidra tashqi qavati qanday hujayralardan tuzilgan?......................................................................................................
15.Gidraning muskul tolalari qayerda joylashgan?........................................................................................................................................................................
16.Gidra qanday harakatlanadi?..........................................................................................................................................
17.Gidraning otuvchi hujayralari qayerda ko’p joylashgan?..............................................................................................
18.Gidraning otuvchu hujayralari qanday tuzilgan?...........................................................................................................
19.Otuvchi kapsula ichida nima joylashgan?......................................................................................................................
20.Gidraning otuvchi kapsulasi qaysi hayvonlarga ta’sir qiladi?.......................................................................................
21.Gidraning nerv hujayralari qanday tuzilgan?.................................................................................................................
22.Gidra nerv hujayralari tanasida qanday joylashgan?.....................................................................................................
23.Endoderma qavati qanday hujayralardan tuzilgan?.......................................................................................................
24.Gidra o’ljasini nima yordamida tutadi?.........................................................................................................................
25.Gidra tanasidagi yirik yadroli mayda hujayra?..............................................................................................................
26.Gidraning regeneratsiyasida qaysi hujayra ishtirok etadi?............................................................................................
27.Gidra tanasi nechta bo’lakka bo’liganligi kuzatilgan?...................................................................................................
28.Gidraning jinssiz ko’payishi qachon amalga oshadi?....................................................................................................
29.Gidraning jinssiz ko’payishidagi kurtaklardan qachon yosh gidra chiqadi?..............................................................................................................................................................................
30.Jinsiy ko’payishi qachon amalga oshadi?......................................................................................................................
31.Gidraning jinsiy ko’payishida tanasida nima paydo bo’ladi?........................................................................................
32.Gidraning tuxum va urug’ hujayradi qayerda yetiladi?.................................................................................................
33.Gidraning tuxum hujayrasida nimalari bo’ladi?............................................................................................................
34.Gidraning urug’lanishi qayerda amalga oshadi?............................................................................................................
35.Urug’langan tuxum hujayra nima deb ataladi?..............................................................................................................
36.Gidra qishda nobud bo’ladi…..?....................................................................................................................................
37.Zigotadan qachon yosh gidra chiqadi?..........................................................................................................................
38.Dengizda yashovchi bo’shliqchililar?............................................................................................................................
39.Aktiniyalarning qaysi belgilari gidraga o’xshaydi?.......................................................................................................
40.Aktiniyalar gidradan qanday farq qiladi?......................................................................................................................
41.Aktiniyalarning paypaslagichlari og’iz teshigi atrofida qanday tartibda joylashgan?...................................................
42.Koloniya bo’lib yashovchi poliplarda…..o’zaro tutashgan bo’ladi?.............................................................................
43.Koloniya bo’lib yashovchi poliplar nimalar b-n ozilanadi?..........................................................................................
44.Ko’pchilik koloniya bo’lib yashovchilar tanasida nima to’planadi?.............................................................................
45.Koloniya hosil qiluvchi poliplar polip davrida qanday ko’payadi?...............................................................................
46.Koral poliplar zich joylashib nimalarni hosil qiladi?.....................................................................................................
47.Eng yirik riflar qayerda uchraydi?.................................................................................................................................
48.Qaysi riflarda zeb-ziynat buyumlari tayyorlanadi?........................................................................................................
49.Korall riflar qaysi hayvonlar u-n yashash makoni hisoblanadi?....................................................................................
50.Riflar tarqalgan joylar nimaga aylantirilgan.?...............................................................................................................
51.Meduzalar tanasi qanday moddadan iborat?..................................................................................................................
52.Meduzalar shakli qanday?..............................................................................................................................................
53.Meduzalarnig og’iz teshigi qayerda joylashgan?...........................................................................................................
54.Meduzalarning tanasining qaysi qismi kuchliroq rivojlangan?....................................................................................
55.Meduzalar qanday harakatlanadi?..................................................................................................................................
56.Meduzalar nimalar b-n oziqlanadi?...............................................................................................................................
57.Meduzalar o’z o’ljasini nima yordamida falajlaydi?.....................................................................................................
58.Qutb va ildizog’iz meduzasi qayerlarda uchraydi?.......................................................................................................
59.Cho’miluvchilar xavfli bo’lgan meduzalar?..................................................................................................................
60.Dengiz likopchasinima deb ataladi?..............................................................................................................................
61.Odamlar u-n zararsiz meduza?.......................................................................................................................................
62.Meduzalar nimalarga katta zarar ko’rsatadi?.................................................................................................................
63.Bo’shliqchililarning qadimgi ajdodi?............................................................................................................................
64.Bo’shliqchililarning kelib chiqish ketma-ketligi?..........................................................................................................