Why the same plant has different shapes of leaves, be specific, very urgent!

The phenomenon of different leaf shapes on the same plant is called heterophylly

There are two situations in which the leaves are different: one is that the leaves have different shapes due to the different ages of the branches, such as the leaves on the young branches of Eucalyptus globulus are smaller, ovate, sessile, and opposite, while the leaves on the old branches are larger, lanceolate or sickle-shaped, stalked, alternate, and often drooping. For example, the leaves on the young branches of the Admiralty cypress are needle-shaped, and the leaves on the old branches are scale-shaped.

Our common cabbage and rape have larger leaves at the base with significant banded petioles, while the upper leaves are smaller, sessile, and grow with stems.

The other is due to the influence of the external environment, which causes special-shaped leaf nature. For example, there are three different shapes of leaves, the aerial leaves, which are arrow-shaped; floating leaves, oval-shaped; The submerged leaves, in the form of bands. It is also like a buttercup, with aerial leaves, flat and broad; The submerged leaves, however, are finely cracked into filaments.

These are all ecological special-shaped leaf properties.

In order to adapt to the environment, for example, dandelions have jagged leaves in places with less wind, and if it is windy.

The leaves that grow are round, and no matter what leaves are, they are adapted to their environment.

No thing in the world is the same.

Because the shape of the leaves is determined by the attractors of the field of morphogenesis of the tree or the leaf.

Each tree has its own unique attractor due to natural selection and environmental changes, so the shape of the leaves is also different. The genetic material of the leaves is different, i.e., the DNA is different in the panicle, which controls the synthesis of different proteins, resulting in different shapes of the leaves.

The different leaves of plants are due to the fact that they have evolved over generations, and different leaf shapes can adapt to different growing environments, such as in hot and arid desert areas, where cactus leaves degenerate to form spikes.

The shape of the leaves

1. Oval

There are many different shapes of leaves, and the more common one is oval, its blade is wide in the middle, the tip and base are round, usually the leaves of tea trees, camphor trees, and primrose trees are oval, and very dense.

2. Lanceolate

The lanceolate branches and leaves are relatively slender, but its leaf base is relatively wider, and the leaves of the common ant are often lanceolate like pine, willow, bamboo and other trees, it has a unique ornamental value, and such leaves are drought tolerant and can be exposed to direct sunlight.

3. Triangle

In fact, in the shape of the leaves, triangular leaves are also more common, its leaves are composed of three leaflets, and its base is wide and flat, some trees may have triangular hairs, with the help of sunlight, its leaves will be more colorful.

This is mainly the result of plant evolution, i.e. natural selection and adaptive evolution. Due to the different conditions of care, temperature, humidity and other conditions, plants have produced different leaves through long-term natural selection in order to survive better.

Leaves are the main organs of plant assimilation and transpiration, and they are considered to be the most sensitive to environmental changes in the process of plant evolution.

Organs with strong plasticity have formed different types of adaptation to adversity under various selection pressures, and their morphological and anatomical characteristics are the most numerous.

It can reflect the adaptation of plants to the environment.

Leaf anatomy has been shown to be closely related to the exchange of matter and energy between the inside and outside of the leaf and its own protection.

Linkage is the skeleton that constitutes the morphological structure of leaves, and it is also an important content to study the morphological structure characteristics of leaves and the ecological adaptation strategies of plants.

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