Transportation in animals and plants is a topic that introduces the students of class 7 to a phenomenon that occurs in living beings. Fluids are being circulated that carry different useful substances and waste materials with them, making life possible for animals and plants. It is an important topic that is taught in online tuition for class 7 to ensure that students understand this basic concept going on within their bodies and in the creatures around them. This article is a quick glimpse of this topic so that you can get a gist of it in less time!
Transportation in Animals
The primitive mode of transportation that was detected was diffusion, but it is a very slow process. Living beings require water, food, and oxygen for each cell of their complex body. Also, each of these cells has to send away the waste particles formed as a result of metabolic reactions. Now, when students attend their online tuition for class 7, they are taught about the circulatory system, which is responsible for the transportation work in the bodies of humans and animals. There are different components of the circulatory system, which are the heart – the pumping organ, blood vessels, and blood. The excretory system is also a circulatory network that takes away and eliminates waste and harmful substances from the body.
Blood
In the circulatory system, which is responsible for the transfer of oxygen, minerals, and nutrients to each part of the body, the first component which is discussed is blood. Blood is red in color because of the presence of hemoglobin. In online tuition class 7, the details of hemoglobin are not discussed as it is a part of higher education. Hemoglobin is the actual component that carries oxygen and is present within the red blood cells. The other two cells in the blood are white blood cells and platelets. White blood cells confer immunity, while platelets act as clotting agents in the body.
Blood Vessels
Next, come the circulatory pipelines known as blood vessels through which the blood flows. There are three types: arteries, veins, and capillaries, different in diameter pressure and the type of blood carried.
Heart
The heart is the main pumping organ in the body, which has different chambers. Based on the complexity of living being, it could be two-chambered, three-chambered, or four-chambered. The heart is further divided into sections called atria and ventricles. If you also want to understand the workings of the heart in detail, then online tuition classes are a good option. You can take classes whenever you want and can ask as many questions.
Excretory System
The elimination of unwanted substances from the body is known as excretion. In online tuition for class 7, the basic components of elimination are discussed, that is, carbon dioxide is exhaled out, and undigested food is removed by egestion. In humans, this excretory system is quite elaborate and consists of the kidney, urinary bladder, ureter, and urethra.
Transportation in Plants
It might be astonishing for some of you to explore the way fluids and substances are circulated in humans and animals; plants also have transport systems in them. The thin, small leaf that you see has numerous vessel systems in it.
Plants need water, nutrients, and carbon dioxide to carry out their reactions for survival and growth. From small herbs to tall trees, the water and nutrients are absorbed by the roots from the soil and transported to every cell. The food of plants is prepared in leaves and from there it is transported to every part and even to each tip of the roots. The transportation tissues in plants are called vascular tissues. These are pipe-like structures, just the way vessels are present in plants.
The vascular tissues are of two types – xylem and phloem. The xylem is specialized to carry water and minerals from roots to other plants. The task of phloem tissues is to transport food. The phenomenon of transpiration is also discussed in online tuition classes. This process is about the loss of water from leaves, which is a driving force for the working of xylem tissues. This driving force is called suction pull. A deficiency of water and minerals is created in the roots by this, and then, with the help of the diffusion process, water and minerals from the soil move into the roots because of a gradient formation.
Conclusion
This was a small summary of the concepts involved in the transportation process occurring in plants and animals. It can help with quick end-moment revision. One can even form short notes on their own. These crisp, to-the-point notes save a lot of time during exams and help in storing everything in short-term memory. But this is not a short-cut method. Short notes can only be useful when one is already well-versed in the depth of the concepts.
