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Bookmark or Share- Leaf Definition & Meaning - Merriam-Websterleaf: [noun] a lateral (see 1lateral 2) 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. a modified leaf (such as a bract or sepal) primarily engaged in functions other than food manufacture. ...
- Plant Leaves and Leaf Anatomy - ThoughtCoPlant Leaves and Leaf Anatomy. Leaves are the site of photosynthesis in plants. Plant leaves help to sustain life on earth as they generate food for both plant and animal life. The leaf is the site of photosynthesis in plants. Photosynthesis is the process of absorbing energy from sunlight and using it to produce food in the form of sugars.
- Leaf Structure and Function | Harvard ForestThe structure of the umbrella tree leaf is typical of leaves in general (Above left photo). It has an outer layer, the epidermis, which produces a waxy waterproof coating. The epidermis of the undersurface produces guard cells, which swell and shrink to close and open the pores (stomata) which control the loss of water vapor (transpiration) and ...
- 30.4: Leaves - Biology LibreTextsStructure of a Typical Leaf. Each leaf typically has a leaf blade called the lamina, which is also the widest part of the leaf.Some leaves are attached to the plant stem by a petiole.Leaves that do not have a petiole and are directly attached to the plant stem are called sessile leaves. Small green appendages usually found at the base of the petiole are known as stipules.
- Leaf | Definition, Parts, & Function | Britannicaleaf, in botany, any usually flattened green outgrowth from the stem of a vascular plant. As the primary sites of photosynthesis, leaves manufacture food for plants, which in turn ultimately nourish and sustain all land animals. Botanically, leaves are an integral part of the stem system. They are attached by a continuous vascular system to the ...
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