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In our observations, we identified five different petiole outlines: circular, with indentation (terete petiole), flattened horizontally, flattened vertically and polygonal. We found that those with an indentation and polygonal outline tend to occur in longer petioles from taller trees, while circular outlines tend to be more frequent in shorter ...
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 · We call the leaves that are connected to the stem through a simple petiole petiolates. In some cases, leaves are attached to the stem without a petiole, so we call them sessile . Petioles themselves can also have differences.
The following points highlight the five main types of petioles found in plants. The types are: 1. Petiole of Cucurbita sp. 2. Petiole of Helianthus Annuus 3. Petiole of Piper Betle 4. Petiole of Nymphaea Stellata 5. Petiole of Eichhornia sp. Type # 1. Petiole of Cucurbita sp. (Family: Cucurbitaceae):
2 kwi 2021 · The petioles in particular must fulfil two important functions: (1) sustain their own weight and that of the lamina against gravity and (2) provide enough mechanical stability to withstand bending and twisting while being flexible enough not to be damaged [5, 6, 8, 9].
2 kwi 2021 · Petioles are important plant organs connecting stems with leaf blades and affecting light-harvesting leaf ability as well as transport of water, nutrient and biochemical signals.
