Structure of Leaf
Each folio typically has a leaf brand called the lamina , which is also the extensive part of the leaf . Some leaves are sequester to the flora stem by a leafstalk . Leaves that do not have a petiole and are forthwith attached to the plant stem are send for sessile leaves . Leaves also have stipules , small green appendages usually find at the al-Qaeda of the leafstalk . Most leaves have a midvein , which travels the length of the leaf and offset to each side to produce vein of vascular tissue paper . The sharpness of the leaf is called the margin .
Within each foliage , the vascular tissue forms veins . The arrangement of nervure in a leaf is call the venous blood system pattern . monocotyledon and dicots differ in their patterns of venous blood system . monocotyledon have parallel venous blood system in which the vena run in true line across the length of the leaf without converge . In dicots , however , the vein of the foliage have a net - like show , work a pattern bed as reticulate venation . Ginkgo bilobais an instance of a plant with dichotomous venous blood system .
The arrangement of leaves on a stem is recognise as phyllotaxy . The numeral and placement of a plant ’s leave will vary depending on the specie , with each mintage exhibiting a characteristic foliage arrangement . leaf are classified as either alternate , spiral , diametric , or whorled . flora that have only one leaf per thickening have leaves that are enjoin to be either alternating or spiral . Alternate leave alternative on each side of the stem in a flat woodworking plane , and spiral leaves are arrange in a volute along the stem . In an polar leaf system , two leaves arise at the same head , with the leaves link opposite each other along the outgrowth . If there are three or more leave of absence connected at a knob , the leaf arrangement is classified as whorled .
There are two basic forms of leaves that can be described considering the path the leaf blade ( or lamina ) is part . leaf may besimple or compound .
What Is Simple Leaf?
A simple foliage has a single blade that is completely single . A simple leaf may have incisions but these incisions are not cryptical enough to divide the sword into leaflets . These leaves attach to a sprig by the petiole or stem . The margins or edges of the simple leaf can be smooth , jagged , lob or parted . Lobed leaf will have gaps between lobes but will never reach the midrib .
example Of plant life With Simple Leaf :
Facts About Simple Leaf
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What Is A Compound Leaf?
The blades of a chemical compound foliage are divide into trenchant theatrical role referred to as booklet which may either jump at the gratuity of petiole or on the sides of a rachis . Also , sometimes the leaflets can be compound . chemical compound folio are a characteristic of some crime syndicate of higher plants . Each booklet is attached to the rachis ( middle venous blood vessel ) , but may have its own stalk .
Examples Of Plants With Compound foliage :
Types Of Compound Leaves
Facts About Compound Leaf
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Difference Between Simple And Compound Leaf In Tabular Form
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