tightly packed cells that protect the leaf, cells contain many chloroplasts, most photosynthesis takes place here, loosely arranged cells with many air spaces for gases, transports food and water to and from the leaf, an opening for gas exchange, prevents water loss, control the opening of the stomata.

Leaf cross section

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?