Types of Leaves: As Leaves are one of the most visible and recognizable parts of plants and are actually one of the most important as well. These are responsible for capturing sunlight and photosynthesis that gives energy to the plant, as well as plant respiration also occurs in them.
so, before going to discuss types of leaves in detail, let’s know about what is a leave?
The leaf is defined as an organ of the plant, which usually emerges from the sides of the branches and stems. It has a laminar shape and is usually green in color. Its main function is photosynthesis.
Due to the great importance that they have in most plants, there is a huge variety of types of leaves and characteristics. Therefore, there are also many different ways to classify them. If you want to learn more about the types of leaves and their different classifications.
The types of leaves can be divided into six major types and the most common types are:
The leaves of conifers are shaped like needles and scorpions. The leaves of conifers generally grow well and adapt well to colder climates, designed to disperse snow and withstand low temperatures. Douglas is an example of firs and spruce trees. The following image shows this type of sheet.
Vaginal leaves are common to both grass species and moths. As you can see, the leaves are long and narrow, wrapping around the roots at the roots. Also, the structure of blood vessels is restricted, and one sheet contains only one sheet. The following image shows an example shell.
Microphyll leaves are distinguished by an uninterrupted pathway. Although this type of leaf is widely used in fossil records, few plants today offer this type of leaf. Some examples include horses and foot horses. The following image shows this type of sheet.
The Fronds leaves are large and thin, usually palm and palm. branches can be separated or split into blades. The image below shows an example of a Frond tree.
Megaphyll leaves are characterized by a large number of blood vessels that can cross strongly. The leaves of megaphyll are wide and flat and generally from the leaves of most plant species. The following image shows this type of sheet.
Vascular sperm or Angiosperm leaves are found in flowering plants. These leaves are distinguished by their stems, tongue, and petrol. The image below shows an example of a vascular sperm leaf.
The term leaf is also often used when distinguishing the petals that form a flower.
In the commercial field. The word leaf comes from the Latin folium, which is why each written sheet of paper is called a folio, which is also known as a leaf. A sheet is a material used for drawing, writing, and counting.
These can be joined by staples, glue, or by any other means forming folders, notebooks, or books, or they can be loose. They can be squared, lined, smooth, on cardboard, or thin sheets.
The petiole is the part of the leaf that connects the blade, which is the wide part that we tend to recognize as the leaf itself, and the stem or branch. Thus, the leaves can be classified according to the petiole in this way:
However, not all plants have to be exclusively petiolate or sessile leaves: there are some that have left of both types, depending on whether they are leaves on the stem or at the base.
They are those that form a ring around the edge of the stem and develop in groups.
These leaves tend to grow in the opposite way and united by the stem, creating a kind of knot. One is shown on each side.
These leaves usually grow one by one creating knots, displaying one next to the other in relation to the stem. The same ones are always kept in alternation.
Refers to leaves that only grow near the base of the plant, and sometimes come into contact with the ground.
They are two leaves that grow side by side and in opposite ways, but they do not have a petiole.
As we explained above, the blade is the most recognizable part of what we usually call the leaf, the broad and generally smooth area. The way the blade divides or not is another type of classification of the leaves.
Actually, the most correct thing is to say that we classify them according to the morphology or shape of the blade, and not the leaf itself. It is one of the most visual and easy to identify classifications. The types of leaves according to the shape of the blade are the following:
Leaves with an acute angle.
Refers to leaves that have a heart shape at their base.
They are the leaves that when they reach their base begin to narrow.
As its name indicates, they are the leaves that have auricles at their base.
Leaves with a base that presents a transverse border.
These at the base are shaped like a wedge, with converging and straight edges.
It has a semicircular base.
They are distinguished because their edges do not maintain the same point on the petiole.
In addition to the previous classification, the shape that the edge of the leaf blade adopts can also be differentiated. Thus, the types of leaves according to the edge of these are:
They are the leaves that show a pointed margin, simulating teeth.
Refers to leaves that have wavy recesses and projections.
These are the leaves that have a smoothed margin.
Type of sheet that has margins with not very marked recesses.
In these leaves, their margins have a pointed, sloping, and small shape.
Three main types of leaves can be found according to their veins, differentiated in this way:
These have branched petioles on different veins.
They are the leaves that have a central vein, from which the rest of the nerves are usually born.
They are the leaves that usually contain two or more main nerves, which branch into other nerves, thus acquiring an appearance very similar to the fingers of the hand.
These are the leaves where the petiole is the starting point of the nerves, which become parallel to each other.
basically, there are two types of leaves i.e., compound and simple leaves. both types are further divided into centric cordate, acicular, oblique, lanceolate, orbicular, elliptical, linear, etc.
the types of leaves are basically two but their arrangement is divided into three types in most of the trees and shrubs which are as follows: opposite, alternate, and whorled.
they are basically compound leaves and simple leaves. the further types oriented from the basic two are acicular, lanceolate linear, centric cordate, oblique, orbicular, elliptical, etc.
They are as follows: (1) simple leaves (2) Compound Leaves
Two examples are:
Raphia regalis is a plant that has the biggest leaves in the world. it belongs to the palm tree family Arecaceae. a species of Raffia Palm.
Wolffia is the smallest leaf that belongs to flowering plants. it is the part of genus nine to 11 species watermeal or duckweed plants are the examples of smallest leaf plants.
leaf can also be known as Frond, Pad, Blade, Bract, etc.
when three or more leaves paced on equal spaces on the node of the plant, they are known as whorled leaves. they can also be present as a set of five leaves.
a leaf whose blade is not divided to the midrib even though lobed is known as a simple leaf.
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