Leaf stalk意思

"Leaf stalk" is a term used in botany to describe the part of a leaf that attaches it to the stem or branch of a plant. It is also known as the petiole. The petiole is the stalk that connects the blade of the leaf to the stem, allowing the leaf to move or sway independently. In some plants, the petiole is very short or absent, in which case the leaf is said to be sessile, meaning it is directly attached to the stem without a stalk.