What is the shape of leaf margin?
What is the shape of leaf margin?
Leaf Edges or Margins Entire Leaf: The margin is even and smooth around the entire leaf edge. Toothed or Serrated Leaf: The margin has a series of toothlike pointed teeth around the entire leaf edge. Lobed Leaf: The margin has an indention or indentions that go less than halfway to the leaf midrib or midline.
What are the 4 types of leaf margins?
Leaf margins
- Leaf margins: main part of the leaf, usually large and flat.
- Undulate: having a wavy margin.
- Sinuate: with a sinous margin.
- Serrate: having a sharp edge.
- Dentate: having a toothed margin.
- Lobate: lobed.
- Scalloped: with a scalloped margin.
- Palmate: like the fingers of a hand spread open.
What is the venation pattern of a leaf?
VENATION. Venation: The arrangement of veins in a leaf is called the venation pattern. Veins bring nutrients and liquid to leaf cells. The illustration gives a few common ones. PARALLEL: just like it sounds: The veins run parallel except where they meet at the tip and the base.
What are the three types of leaf margin?
There are many different types of leaf margins. A few examples include: Smooth (Figure 4), Saw-Toothed (serrate—Figure 5), very Irregular (Figure 6), and even Armed with sharp spines (Figure 7).
What is parallel venation in leaves?
Venation is the arrangement of veins in a leaf. Parallel venation is where the secondary veins run parallel to each other and are connected laterally by minute and straight veinlets. This type of venation is mostly seen in monocots.
What is a linear leaf shape?
Linear leaves have a long, narrow leaf shape, with sides that are almost parallel with each other and usually are more than four times longer than broad. Linear leaves can be flat, triangular, or square in cross section.
What is a leaf margin?
A margin refers to the edge of the leaf.
Does leaf size and shape vary between species?
The thickness, shape, and size of leaves are adapted to the environment. Each variation helps a plant species maximize its chances of survival in a particular habitat.
How the venation helps to leaves?
Venation is the pattern of veins in the blade of a leaf. The two primary vascular tissues in leaf veins are xylem, which is important for transport of water and soluble ions into the leaf, and phloem, which is important for transport of carbohydrates (made by photosynthesis) from the leaf to the rest of the plant.
What are different shapes of leaves?
| Sword-shaped (ensiformis) Long, thin, pointed | Lance-shaped (lanceolata) Long, wider in the middle | Elliptic (elliptica) Oval, with a short point |
|---|---|---|
| Opposite (oppositifolia) Leaves opposite one another | Alternate (alternifolia) Arranged alternately | Peltate (peltata) Rounded, stem underneath |
What is net venation?
Definition of net-veined : having veins arranged in a fine network a net-veined leaf — see venation illustration — compare parallel-veined.
