Leaf Definition & Meaning - Merriam-Webster
网页The meaning of LEAF is a lateral outgrowth from a plant stem that is typically a flattened expanded variably shaped greenish organ, constitutes a unit of the foliage, and functions primarily in food manufacture by photosynthesis.
LEAF Definition & Meaning | Dictionary.com
网页An appendage growing from the stem of a plant. Leaves are extremely variable in form and function according to species. For example, the needles of pine trees, the spines of cacti, …
Leaf | Definition, Parts, & Function | Britannica
网页Leaf, any usually flattened green outgrowth from the stem of a vascular plant. Leaves are the primary sites of photosynthesis and manufacture food for plants. They are an integral part of the stem system and can be modified into a variety of other plant organs.
Leaf - Wikipedia
网页A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]
Leaf - Definition, Function and Types | Biology Dictionary
网页2017年8月19日 · Leaf Definition. The term leaf refers to the organ that forms the main lateral appendage on the stem of vascular plants. In general, leaves are thin, flat organs responsible for the photosynthesis of the plant.
Types of Tree Leaves with Pictures: Identification Guide (Leaf ...
网页2024年2月14日 · Types of Tree Leaves with Pictures: Identification Guide (Leaf Identification Chart) By Jessica Nolan, Gardening Expert Trees. Knowing how to identify tree leaves can help to know which trees are growing in woodlands, forests, or parks. It is possible to identify leaves by their shape, edging, size and patterns.
Complete Guide To Different Types of Leaves with Pictures and Leaf …
网页2023年7月11日 · However, there are categories and ways to identify types of leaves. This article will look through the various types of leaves, their categories, and the typical tree groups they characterize. Then, we break down the parts of a leaf and how they can dramatically affect the shape of the leaf.
Plant Leaves and Leaf Anatomy - ThoughtCo
网页2019年11月4日 · Plant leaves are very important structures as they help to maintain life on earth by generating food (sugars) via photosynthesis. Leaves can have different shapes and sizes. The basic components of leaves in flowering plants (angiosperms) include the blade, the petiole, and the stipules.
Anatomy of a Leaf, Use These Leaf Parts to Identify a Tree
网页2019年5月8日 · Leaves are food factories for the tree. Powered by sunlight, the green substance in leaves called chlorophyll, use carbon dioxide and water to produce life-sustaining carbohydrates (sugars)....
LEAF | English meaning - Cambridge Dictionary
网页leaf noun [C] (PAPER) a thin flat substance, esp. a sheet of paper, or a layer of something: Some of the leaves of the old book had come loose. A leaf of a table is an extra flat …