Hello our dear visitors. Leaves are one of the organs of the plant. Their main functions are photosynthesis and gas exchange. Most often they are flat, so they easily absorb sunlight, and thin, so they pass it well to the chloroplasts contained in their cells. Most leaves have a so-called stomata. This is the time with which the plant evaporates moisture and breathes.
And today we decided to take a closer look at these vegetative organs of plants. In this article, we have collected the most interesting facts about leaves.
By their appearance, you can tell if the plant is healthy. You can also find out if the plant receives all the macro- and microelements it needs, which, in general, get to it with the water it consumes. For example, if the plant gets too much acid, the leaves will start to turn red at the edges. If there is a lot of alkali in its “food”, then the leaf will be bright green or even turquoise.
They are green in color due to chlorophyll. Chlorophyll is a green pigment that colors plant chloroplasts green. However, it should be noted that not all plants have green leaves. For example, Japanese maple has red leaves. They are red because they contain the pigment anthocyanin. However, they also contain chlorophyll, but in lower concentrations, which makes anthocyanin the dominant pigment.
In some young plants, they may also be reddish. This is because they contain very little chlorophyll. But as they develop, they will turn green, as the chlorophyll content will increase.
Pea antennae, clinging to the existing protrusions, in fact, are also modified leaves. They are necessary for the plant so that it can cling to the protrusions and thus “crawl” up, where there is a lot of sunlight.
Cypress is the record holder among plants for the number of leaves on a tree. For example, on a cypress, their number can reach 50 million. For comparison, in oak, on average, their number does not exceed 250,000.
The cells contained in their structure contain chloroplasts. Plants need chloroplasts for photosynthesis. During this process, chloroplasts convert carbon dioxide and water into oxygen and carbohydrates. The plant assimilates carbohydrates and receives the energy it needs, and releases oxygen into the environment. It is thanks to photosynthesis that all living things on the planet can breathe.
They have many veins designed to perform the same function as the vessels in the body of humans and animals. The only difference is that the veins of the leaves are filled with water, not blood, which transports the necessary nutrients.
Have you ever heard of a plant like Welwitschia mirabilis? This is an ancient gymnosperm plant, which is also a relic and endemic to the Namib Desert. Welwichia was discovered by the Austrian botanist and physician Friedrich Welwich in 1859, in his native Namib desert.
The amazing Velvichia lets out only 2 leaves, which accompany her throughout her life. And the estimated life expectancy of Velvichia is 400-1500 years (the age of some specimens is even 2000 years). That is, the leaves of this plant also live for so many years.
Koalas are the only animals that can survive on a diet consisting entirely of eucalyptus leaves. The thing is that they are very poisonous, rough and practically do not contain any nutrients. However, koalas have learned to survive on such a diet. Naturally, because of this, they became less mobile, so as not to expend energy, which they hardly extract from coarse and non-nutritious eucalyptus leaves.
Tea is a flavored drink commonly made by pouring hot water over dried leaves of Camellia sinensis. Moreover, it is worth noting that no matter what tea you drink, even green, even black, even oolong – all this is Chinese Camellia, only in different degrees of fermentation.
Perhaps, many people know from childhood that if you eat a 5-leaf clover, then you will be haunted by good luck. But did you know that there is only one five-leaf clover for every 5,000 four-leaf clovers? This was established thanks to scientists who conducted research and studied more than 5,000,000 copies.
Moreover, this plant is not only 5-leafed, but also 6-7-8-leafed. In 2002, Japanese Shigeo Obara found a clover with 18 leaves in his garden. By this, he got into the Guinness Book of Records. But a little later, in 2008, he found a clover with 21 leaves, thereby breaking his own record and again hitting the Guinness Book of Records.
Many leaves are covered with small hairs of trichomes (from the Greek τρίχωμα and translates as “hair”). Trichomes perform a variety of functions that have not yet been fully explored. One of their functions is to protect the sheet tissue from overheating. They also protect it from insects, help reduce moisture evaporation, remove salts, etc.
They can vary greatly in shape and size. For example, in marsh duckweed, their width and length are approximately 3-4 mm. At the same time, the leaves of the Raffia palm are simply gigantic, reaching 25 meters in length and 3 meters in width.
There is a very unique plant – bashful mimosa. And all its uniqueness lies precisely in its leaves. This plant is very sensitive to touch. If you touch it, it will immediately fold the leaves and lower the branches down. Why does the plant do this? It does this to protect itself. Surprisingly, studies have shown that the plant is able to “remember” touch, and if it does not pose a threat to it, then it will simply stop rolling its leaves.
The putang plant grows on the island of New Guinea. Its leaves are considered to be the sharpest in the world. The Papuans living on this island even use them instead of shaving machines.
That’s all for us, dear readers. Thank you for paying attention to our Internet resource.