A o’simliklarning paydo bo’lishini b zamburug’larni ichki, tashq tuzilishini


b) nok, do’lana, qatrong’i, pista


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b) nok, do’lana, qatrong’i, pista
s) arsha, shamshod, nok
d) tol, terak, gilos,chinor, yong’oq

  1. O’zbekistonda nisbatan sekin o’sadigan daraxtlarni belgilang.

a) chinor, tol, terak, shotut, yong’oq
b) nok, do’lana, qatrong’i, pista
s) arsha, shamshod, nok, pista
d) tol, terak, gilos,chinor, yong’oq

  1. Daraxtlar ushki kurtaklarda joylashgan ….. to’qimaning hujayralari bo’linishi hisobiga bo’yiga o’sadi.

a) asosiy b) mexanik s) hosil qiluvchi d) kambiy



  1. Sekvoyadendronning bitta qubbasida nechta urug’ bo’ladi ?

a) 196 ming b) 200 s) 200 ming d) 196

  1. Sekvoyadendronning nechta urug’i 1 kg ni tashkil etadi ?

a) 196 ming b) 200 s) 200 ming d) 196

  1. Sekvoyadendronning nechta urug’i 1 g ni tashkil etadi ?

a) 196 ming b) 200 s) 200 ming d) 196

  1. Novdaning qaysi qavatidan organik moddalar harakatlanadi ?

a) ksilema b) floema s) o’zak d) po’st

  1. Novdaning qaysi qavatida organik moddalar to’planadi ?

a) ksilema b) floema s) o’zak d) po’st

  1. Bo’yi 1 m dan ham oshadigan bir yillik, poyasida lub tolalari yaxshi rivojlangan o’simlikni aniqlang.

a) rayhon b) kanop s) zig’ir d) kanop va zig’ir

  1. Yog’ochligi yumshoq tez o’sadigan daraxt(lar)ni aniqlang.

a) terak b) tol s) chinor d) a va b

  1. Kurtagi nisbatan mayda, tez o’suvshi yog’ochligi yumshoq bo’lgan o’simlik.


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