Examples of simple leaf in the following topics:
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- Leaves may be simple or compound .
- In a simple leaf, such as the banana leaf, the blade is completely undivided.
- Leaves may be simple or compound.
- In simple leaves, the lamina is continuous.
- (a) The banana plant (Musa sp.) has simple leaves.
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- Each leaf typically has a leaf blade called the lamina, which is also the widest part of the leaf.
- The edge of the leaf is called the margin .
- Within each leaf, the vascular tissue forms veins.
- The arrangement of veins in a leaf is called the venation pattern.
- A leaf may seem simple in appearance, but it is a highly-efficient structure.
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- It produces oxygen and glyceraldehyde-3-phosphate (G3P or GA3P), simple carbohydrate molecules that are high in energy and can subsequently be converted into glucose, sucrose, or other sugar molecules.
- Though the equation looks simple, it is carried out through many complex steps.
- The stomata are typically located on the underside of the leaf, which minimizes water loss.
- The basic equation for photosynthesis is deceptively simple.
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- The outermost layer of the leaf is the epidermis.
- The cuticle reduces the rate of water loss from the leaf surface.
- Other leaves may have small hairs (trichomes) on the leaf surface.
- Leaf trichomes include (b) branched trichomes on the leaf of Arabidopsis lyrata and (c) multibranched trichomes on a mature Quercus marilandica leaf.
- Stomata on the leaf underside allow gas exchange.
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- Intercalary meristems occur only in monocots at the bases of leaf blades and at nodes (the areas where leaves attach to a stem).
- This tissue enables the monocot leaf blade to increase in length from the leaf base; for example, it allows lawn grass leaves to elongate even after repeated mowing.
- Plant tissues are either simple (composed of similar cell types) or complex (composed of different cell types).
- Dermal tissue, for example, is a simple tissue that covers the outer surface of the plant and controls gas exchange.
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- The stem and other plant organs are primarily made from three simple cell types: parenchyma, collenchyma, and sclerenchyma cells.
- They are found in the stem, the root, the inside of the leaf, and the pulp of the fruit.
- The epidermis of a leaf also contains openings, known as stomata, through which the exchange of gases takes place .
- Two cells, known as guard cells, surround each leaf stoma, controlling its opening and closing and, thus, regulating the uptake of carbon dioxide and the release of oxygen and water vapor.
- Both are considered complex plant tissue because they are composed of more than one simple cell type that work in concert with each other.
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- Using only the basic laws of physics and the simple manipulation of potential energy, plants can move water to the top of a 116-meter-tall tree.
- Water potential values for the water in a plant root, stem, or leaf are, therefore, expressed in relation to Ψwpure H2O.
- "System" can refer to the water potential of the soil water (Ψsoil), root water (Ψroot), stem water (Ψstem), leaf water (Ψleaf), or the water in the atmosphere (Ψatmosphere), whichever aqueous system is under consideration.
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- Mycorrhizae display many characteristics of primitive fungi: they produce simple spores, show little diversification, do not have a sexual reproductive cycle, and cannot live outside of a mycorrhizal association.
- In a second example, leaf-cutting ants of Central and South America literally farm fungi.
- They may be (a) crust-like, (b) hair-like, or (c) leaf-like.
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- Transpiration is the loss of water from the plant through evaporation at the leaf surface.
- Transpiration is caused by the evaporation of water at the leaf, or atmosphere interface; it creates negative pressure (tension) equivalent to –2 MPa at the leaf surface.
- The atmosphere to which the leaf is exposed drives transpiration, but it also causes massive water loss from the plant.
- Aquatic plants (hydrophytes) also have their own set of anatomical and morphological leaf adaptations.
- Xerophytes and epiphytes often have a thick covering of trichomes or stomata that are sunken below the leaf's surface.
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- The trees of the temperate forests leaf out and shade much of the ground; however, this biome is more open than tropical wet forests because trees in the temperate forests do not grow as tall as the trees in tropical wet forests.
- The soils of the temperate forests are rich in inorganic and organic nutrients due to the thick layer of leaf litter on forest floors.
- As this leaf litter decays, nutrients are returned to the soil.
- The leaf litter also protects soil from erosion, insulates the ground, and provides habitats for invertebrates (such as the pill bug or roly-poly, Armadillidium vulgare) and their predators, such as the red-backed salamander (Plethodon cinereus).
- The leaf litter is home to invertebrates (such as the pill bug or roly-poly, Armadillidium vulgare) and their predators, including the red-backed salamander (Plethodon cinereus).