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18 sty 2024 · Compare petiolate and sessile leaves. Distinguish among alternate, opposite, and whorled phyllotaxes. Compare simple, pinnately compound, and palmately compound leaves.
The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves the leaf stalk may be long (as in the leaves of celery and rhubarb), or short (for example basil). When completely absent, the blade attaches directly to the stem and is said to be sessile.
17 gru 2016 · Since leaves are responsible for fueling plants through photosynthesis, the petiole serves to transport the energy made in the leaf to the rest of the plant. It also serves to transport nutrients and water that are absorbed by the roots and passed up through the xylem, to the leaf.
Leaves with petiole are called petiolate while those without petiole, are called sessile. They may be short or long and cylindrical. Sometimes, it is flattened as in the case of lemon.
The Petiole. Most leaves have a stem that attaches the blade of the leaf to the rest of the plant. This is the petiole. However, in some plants, the leaves do not have a petiole and the blade is directly attached to the plant stem. These leaves are sessile (lacking a petiole).
Petioles may be placed in water or a nutrient solution. Under these conditions, leaves vary widely in the amount of fluid they take up, and may wilt unpredictably. Tissue near the cut end of the petiole acts as a ‘sink’ for radioactively labeled metabolites (Pratt and Matthews, 1971). On the other hand, the method minimizes the problem of ...
7 lut 2022 · Petioles are important plant organs connecting stems with leaf blades and affecting light-harvesting ability of the leaf as well as transport of water, nutrients and biochemical signals.
