What is a pinnate vein pattern?

What is a pinnate vein pattern?

A “pinnate” venation describes a visible pattern on a leaf where there is a dominant center vein, or “mid-rib” with other veins branching off from the middle. The branching veins may be opposite one another, creating a symmetrical appearance, or they may be alternate.

What are three types of leaf vein patterns?

The arrangement of veins in a leaf is called the venation pattern; monocots have parallel venation, while dicots have reticulate venation. The arrangement of leaves on a stem is known as phyllotaxy; leaves can be classified as either alternate, spiral, opposite, or whorled.

What is pinnate reticulate venation?

Pinnately reticulate venation is the arrangement of veins where only one midrib run from base of leaves to the apex and from midrib, many lateral veins and veinlets arises in the network form e.g., mango, peepal etc.

What’s the difference between pinnate and palmate venation?

The key difference between pinnate and palmate is that the pinnate is the venation pattern in which one main vein extends from the base to the top of the leaf and smaller veins arise from the main vein whereas the palmate is the venation pattern in which several main veins radiate from one point where petiole and leaf …

Are oak leaves pinnate or palmate?

Pinnate and palmate are two main classifications of vein patterns used in tree identification. Pinnate leaf veins extend from the midrib to the edges of the leaf. Pinnate venation is sometimes called feather venation. Alders, beeches, birches, chestnuts, elms and oaks have pinnate venation in their leaves.

What is the lamina of a leaf?

The lamina is the expanded, flat component of the leaf which contains the chloroplasts. The sheath is a structure, typically at the base that fully or partially clasps the stem above the node, where the latter is attached.

What does palmate and pinnate mean?

Pinnate refers to a condition of compound leaves with twig-connected petioles of varying lengths and rows of smaller sub-leaves above the axil while palmate refers to a condition of compound leaves, having leaflets form and radiate from a single point of attachment called the distal end of the petiole or rachis.

What is pinnate vein pattern?

The branching veins may be opposite one another, creating a symmetrical appearance, or they may be alternate. Pinnate is one of several different types of vein patterns on leaves that occur naturally.

What is pinnate venation?

Pinnate venation is one of the most common venation patterns shown by plants. One main vein extends from the base of the leaf to the top of the leaf.

What is a pinnate leaf?

Leaf Veins: Pinnate A leaf with a prominent midvein and secondary veins branching off along both sides of the midvein. The midvein and the secondary veins are the most apparent veins. The veins of the American Elm can also be considered to be impressed.

What is the difference between pinnate pattern and palmate pattern?

In pinnate pattern, only one main vein is there while in palmate patter three or more main veins can be present. Pinnate venation shows a feather-like structure while palmate venation shows a palm-like structure.