The cross-section of a leaf reveals its complex structure. The waxy cuticle surface ... Petiole Attaches the leaf to the stem. A leaf usually has a large surface area, so that it can absorb ...

Pollen structures among leaves on a male ginkgo tree. (Modified from Agnieszka Kwiecień, Nova [CC BY-SA 4.0]) Female trees are recognizable before pollination by long green stalks, ending in two round ...

Anthracnose leaf blight and stalk rot of corn, caused by the fungus Colletotrichum ... 2) With the aid of a hand lens or microscope fungal structures can be observed. The most conspicuous feature is ...