Kalmar (a), dafniya (b) mansub sinf vakilalarini suv muhitiga moslanish belgilarini aniqlang
So‘rovnoma
- a) yog'li kirtmalar; b) uzun o'simtalar
- a) terini tangachalar bilan qoplanishi; b) uzun o'simtalar
- a) xitin qoplag'ich; b) tanasini suyri shaklda bo'lishi
- a) gazli kiritmalar; b) shilmshiq modda ajratish