7-sinf testlar
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1 1. lansetnikka xos bo'lmagan belgilarni aniqlang. 1) nerv naychasi ektodermaning orqa tomonidan hosil bo'ladi; 2) nerv naychasi ektodermaning yon tomonidan hosil bo'ladi; 3) ayirish sistemasi a'zolari mezodermadan hosil bo'ladi; 4) limfa sistemasi a'zolari mezodermadan hosil boladi; 5) gaz almashinuvi jabralarda amalga oshadi; 6) bosh miyasi sodda tuzilgan a) 2,6 b) 1,3,5 c) 1,3,4,5 d) 2,3,5,6 2.tikandum qaysi turkumga mansub? a) bakra b) skat c) suyaklilar d) tog’aylilar 3.quyidagi hayvonlami tana qoplami bilan juftlab belgilang. a) jayra; b) yexidna; c) gekkon; d) muflon; 1) jun; 2) uzun ninalar; 3) uzun qillar; 4) muguz tangachalar; 5) suyak tangachalar; 6) tivit a) a-3, b-6, c-3, d-4 b) a-3, b-4, c-5, d-1 c) a-2, b-4, c-5, d-3 d) a-2, b-3, c-4, d-1 4.baqa …
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