Ta'rif
UlashishTropizm
O'simlik organlarining ta'sir etuvchi omil tomon yo'nalgan holda o'sishi (musbat) yoki omilga nisbatan teskari yo'nalishda o'sishi (manfiy) orqali namoyon bo'ladigan harakat.
Biologiya · 7-sinf · 9.1-mavzu. Tirik organizmlarning harakatlanishi
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