The external structure and morphology of cactus

The various appearance characteristics of different plants in    are almost always closely related to their specific growth patterns. Although sometimes people can only guess from the shape of a plant what it means to plant growth, these guesses are often the beginning of new discoveries. In addition, if we simply describe and explain professional terms, it would be too boring for the broad masses of readers. Therefore, this topic aims to combine the external structure of cactus with its possible significance for plant growth.

The picture shows the structure of cactus

The most striking thing about    cactus is its shape. From the arboreal cactus with a height of more than 20 meters to a single column and globular or leaf-shaped stem, there are too many kinds to list. The original cactus plants may be shrubby, that is, many branches with lateral buds slightly above the ground. The lateral buds of some species grow high on the ground and gradually evolve into tree-like species. On the contrary, those species that retain the early morphology to a greater extent become columnar or even globular, leaf-shaped cactus with few or no branches. The evolution of these species in the cactus family must be independent of each other.

Because there are often species in a genus that reflect the characteristics of all stages of this evolutionary history. For example, there are not only columnar and spherical species, but also transitional species between the two species, such as Cactus and Cactus, which are native to South America. The same is true of the genus Cornu in North America.

The morphology of    plants is of great significance to its growth. The tall tree cactus needs plenty of rain and is the strongest by nature. They have the largest roots and are often immutable as soon as they take root. Tree cacti are often far apart in nature, and cacti of seedlings or other species are rarely found in their territories. But this does not mean that there are absolutely no seeds scattered between them. In fact, scattered seeds have been found in some geological experiments. These seeds will soon sprout when Rain Water is sufficient. But soon, when the ground became dry, almost all the seedlings withered again. This is because the soil is almost covered with the crisscross fibrous roots of adult cacti. The taller the plant is, the larger the root system is and the more water can be stored. Therefore, relatively speaking, where the tall cactus is located, the surface can evaporate the least water. Seedlings rarely have a chance to survive the first early dry stage in such a soil environment. Only when an old cactus dies or is cut, will the young cactus near it have a chance to thrive and the newly germinated seedlings will be able to survive.

   generally speaking, smaller plants get less light than large plants, because the technical leaves of large plants block out the sun. But getting enough light is hardly the same problem for cacti in arid areas. Because of its large and developed roots, it is almost impossible for cacti of the same form to be so close to each other that they block the sun from each other. On the contrary, there is a great difference in shape between the large shrubby cactus and the small spherical cactus growing under it, such as water and sunlight.

. Only shrubby and small spherical cacti can survive in particularly arid deserts. Although they also divide the technology, the lateral buds fall off as soon as they come out of the soil or before they are unearthed (such as the so-called budding species). Some of the plants of these species are easy to break and will fall a little farther from the ground or be taken away from the animal's fur. These "seedlings" are easy to root, so they can go beyond the most delicate and sensitive stage of the seedling stage. In addition, the broken parts of the shrubby, multi-jointed cactus are easy to survive, and even the cut-off stems of the columnar cactus (it should be said that this kind of cactus is inherently unsuitable for asexual reproduction) can take root.

   for friends who love cactus, this method of reproduction is very simple to operate, and its advantage is that it can get offspring with exactly the same genes as the mother.

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