It turns out that the leaf petiole easily breaks along, but it is difficult to break in the transverse direction.
| December 13, 2020 | education
It turns out that the leaf petiole easily breaks along, but it is difficult to break in the transverse direction. Give an explanation for this phenomenon.
the leaf petiole is easily torn lengthwise, it is easier because the leaf cells are located in this way, the leaf skeleton is very fragile and therefore it is more difficult to tear against the “coat” because this skeleton interferes.
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