5-sinf botanika i-chorak uchun test savollari

9-sinf .Biologiya fanidan III chorak testi.

1. 
   Ikki jinsli hayvonlar nima deb ataladi ?
   

A. germofrodit B. partonogenez C. ayrim jinsli D.anteridiy
2. Tuxum hujayraning ko’payishi nima deb ataladi ?
A. ontonogenez B. ovogenez C. zigota D. spermatogenez
3. Urug’langan tuxum hujayra nima deb ataladi ?
A. spora B. sista C. zigota D. sorus
4. Gulli o’simliklardan qo’sh urug’lanishni nechanchi yilda va qaysi olim aniqlagan ?
A. 1915-yil Yan Purkin
B. 1898-yil M. S. Navashin
C. 1915-yil S.G. Navashin
D. 1898-yil S.G Navashin
5. Mitoz necha bosqichdan iborat ?
A. 4 B. 3 C. 2 D.1
6. Bir hujayrali suv o’tlarining ko’p bo’laklarga bo’linishi nima deb ataladi ?
A. patenogenez B. shizogoniya C. konyugatsiya D. denoturatsiya
7. Salomaleykum tugunagi 1kv m joyda nechtagacha yangi o’simlik hosil qiladi ?
A. 1700 B. 1900 C. 1800 D.1600
8. Interfaza necha davrga bo’linadi ?
A. 1 B. 4 C. 2 D. 3
9. Spermatazoidlarning rivojlanishi nima deb ataladi ?
A. spermotogenez B.ovogenez C. ontogenez D. gomogenez
10. Jinsiy hujayralarning rivojlanishi davri nima deb ataladi ?
A. ovogenez B. gametogenez C. ontogenez D. spermotogenez
11.G. Mendelning ikkin chi qonuni-----
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12. G. Mendel o’z tajribalarini qaysi o’simlik ustida o’tkazgan ?
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13. Mendel qaysi usuldan foydalangan ?
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14. Organizm genotipda ikkita bir xil genlar bo’lsa, bunday organizmlar nima deb ataladi?

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15. Yorug’lik ta’sirida suvni dissotsiyalanishi nima deb ataladi ?
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