Search results
7 lut 2022 · Although petioles and leaves are highly diverse in size, shape and hence anatomical settings, comparative studies linking petiole structures with leaf parameters or whole-plant size across species and evolutionary lineages are rare.
Leaves attached to stems by stalks (known as petioles) are called petiolate, and if attached directly to the stem with no petiole they are called sessile. [ 20 ] Ferns have fronds .
2 kwi 2021 · Petioles are important plant organs connecting stems with leaf blades and affecting light- 28 harvesting leaf ability as well as transport of water, nutrient and biochemical signals.
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.
Leaves that do not have a petiole and are directly attached to the plant stem are called sessile (apetiolate) leaves (Figure \(\PageIndex{4}\)). In a special type of sessile leaves called perfoliate leaves, the stem passes through the center of the blade (Figure \(\PageIndex{4}\)).
31 paź 2023 · Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves. The arrangement of veins in a leaf is called the venation pattern; monocots have parallel venation, while dicots have reticulate venation.
17 gru 2021 · Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves. The arrangement of veins in a leaf is called the venation pattern; monocots have parallel venation, while dicots have reticulate venation.
