ตัวอย่าง geotropism

• The mygalomorphs that do balloon express a level of negative geotropism that is not expected to be present elsewhere in the lineage.

• It is this negative geotropism and positive phototactic behaviour which may distinguish ballooning lepidopterans from the primitive non-ballooning lineage.

• Germination of embryos was defined as extension and positive geotropism of the radicle.

• Darwin also drew attention to the similarities between animals and plants, e.g., sensitivity to touch (thigmotropism), light sensitivity (phototropism), and gravity (geotropism).