Leaves are the most important part of the plant body. Because the leaves are a cooking tool for plants to process food for consumption by the body. Leaf is a process resulting from lateral growth of stems that grow from meristematic tissue of plant shoots. Most leaves are green, this is because the leaves contain chlorophyll which is a green substance in which chlorophyll will make the leaves green. not only as a means of cooking food for plants, leaves also have several other functions for plants. The following are 9 functions of leaves for plants and their explanations:
1. As a Vegetative Breeding Site
Leaves have the benefit of being a natural vegetative breeding ground for plants. Like there is a plant called cocor duck, the leaves of the cocor duck plant will grow shoots that can become other cocor duck plants. In addition to using shoots to reproduce naturally, propagation through leaves can also be grown through tissue culture techniques. Photosynthesis in plants can be influenced by 2 things, namely external factors and internal factors. The following are some of the factors that affect photosynthesis for plants:
Also read: Characteristics of Closed Seed Plants, Internal Growth Factors.
2. Tool for Breathing
Respiration is the process of plants in breathing. The process of respiration in plants is found in the stomata of the leaves. Stomata on leaves are located on the underside of the leaves. That's where the process of respiration or the activity of carbon dioxide and oxygen that is formed to support the photosynthesis process occurs. Leaf stomata found on the two leaf surfaces serve to assist the process of gas exchange in plants. However, in addition to using leaf stomata, there are also other plants that use lenticels found on the stem to breathe.
Plants need sunlight for photosynthesis. Leaf stomata are assisted by chlorophyll in capturing sunlight. Leaf chlorophyll is not only found in the leaves but also in the stems of plants. Usually the leaf chlorophyll located on the stem is a plant whose leaves are different from others such as cacti and pine trees. To carry out photosynthesis, plants must meet several important requirements, namely:
Obtains carbon dioxide from the air through leaf stomata
Located in a place that has sufficient sunlight
The process of absorbing water from the soil, which then flows into the leaves through wooden vessels
The following video shows the process of photosynthesis in plants:
Also read: Types of Symbiosis
3. As a Means for Evaporation of Water
Leaf stomata are found in 2 parts, namely on the upper side of the leaf and the lower side of the leaf. However, on the underside of the leaves, leaf stomata are most commonly found. In the leaves, the process of transpiration or the process of evaporation of water occurs in the stomata of the leaves and the cuticle. But most of the transpiration process in plants occurs in the stomata of the leaves rather than in the cuticle. There are studies that say that the process of evaporation of water in the leaves occurs as much as 90% of the water absorbed by the roots. For a more detailed explanation of the evaporation process through the cuticle and stomata, see below:
The evaporation process through the cuticle is an evaporation process that occurs directly through the cuticle in the epidermis.
The evaporation process through leaf stomata is a process of evaporation of water that takes place through leaf stomata and about 90% of the amount of water contained in plants is lost through the leaf stomata transpiration process.
4. As a Food Processing Tool
The function of the leaves for the next plant is as a tool for processing food. The process of food processing that occurs in plants is often referred to as the assimilation process. Leaves on plants will process food which will later become assimilate or photosynthetic. In the dicotyledonous group of plants, food processing occurs in the palisade parenchyma tissue. In contrast to the dicotyledonous group of plants, the food processing process in the monocotyledonous group occurs in the spoons plant tissue.
Another name for assimilation is photosynthesis, photosynthesis is the process where plants are assisted by the help of sunlight to form carbohydrates from carbon dioxide (CO2) and water (H2O). Plants will be able to carry out photosynthesis because they have cells that contain chlorophyll or leaf green matter. In the process of photosynthesis, energy from sunlight will be absorbed by chlorophyll and will turn into chemical energy which is then stored in the form of carbohydrates or other organic compounds.
Carbohydrate substances that have been obtained in the photosynthesis process will be converted into proteins, fats, vitamins or other compounds that are useful for plants. These organic compounds, besides being used by plants, are also useful for humans and herbivorous animals as food ingredients to support their lives. Also read: Organs in Plants.
5. As a Tool for Absorbing Nutrients
The process of absorption of nutrients in plants occurs in the leaves. The absorption taken in plants is inorganic substances used to cook food, especially food substances in the form of gas, namely carbon dioxide (CO2) which will be taken from the air through a fine gap called the leaf mouth. on the inorganic substance in the form of CO2 is absorbed from the air which is then added with water and nutrients which are absorbed by the roots and assisted by light from the sun, then the plant will process it into organic substances that plants need to live. Also read: Characteristics of Moss Plants.
6. As a Place to Store Food
Leaves not only function as a tool for cooking food that will be consumed by plants. However, leaves also have a function as a tool to store food for plants, either temporarily or for a long period of time. If the position of the plant in the environment is favorable. Photosynthate substances produced by leaves exceed the required photosynthetic substances so that the leaves store these substances in their bodies. Also read: Differences in Food Chains and Food Webs.