 Methods of asexual reproduction, the fission method, first are contents, definition of fission, then types of fission, binary fission, and the multiple fission, okay. So, the fission, word fission, that is mean to split, you have a toot, divide, so simply fission is a asexual reproduction method in which one animal divides into two or more than two organisms. If one animal divides into two or more than two organisms, then that is actually the fission. So, normally in fission, the process is inward-froing, that is, one animal will pinch from one place, it will pinch off from the side, and ultimately, the ring of the constriction divides it into two parts. So, in fission, this is a special prominent feature, that the cytoplasm, the cell, the organism, what it does from a specific place, it constricts it, and from there, it splits and divides. So, types of fission, if you see there are basically two types of fission, that is the binary fission and the multiple fission, binary fission, binary fission means two, if one animal divides into two organisms, then it is called binary fission, and if one animal divides into two organisms, then it is called binary fission. So, when one organism divides into two organisms, that is called binary fission. Importantly, the organisms that have to be divided, they are called parent, and the new ones that are made, they are called doctors. So, when a parent divides into two doctors, they are called binary fission. In binary fission, if we see, usually the two doctor cells that become the doctor organism, they are approximately of equal size. So, that means binary fission is usually from the center, from the middle, it divides into two organisms. Now, if we look at the line of the division of the binary fission, we can divide it into three categories, asymmetry called binary fission, then transverse binary fission and the longitudinal binary fission. Asymmetry. Asymmetry means that animals that do not have a specific shape, then the line of binary fission can be divided into two organisms from anywhere. Simply like amoeba. Amoeba is an asymmetrical, an asymmetry is called a specific shape. For example, our asymmetry is bismetrical. If we have a round farm, we say it is a radial asymmetry, not round farm asymmetry. What does asymmetry mean? Arrangement, alignment. So, asymmetrical binary fission is the one in which an asymmetry is divided into two organisms from anywhere. For example, when there is a binary fission in amoeba, it is asymmetrical. Because an imaginary line is pinched from anywhere, it is divided into two organisms. Okay, like the binary fission, first of all, it will divide the nucleus. Whenever an animal is divided, it will first divide the nucleus. It will become one or two cells and then it will divide the cytoplasm. Transverse binary fission. Transverse means that if an organism has a longitudinal form, it will be divided at a 90 degree angle. In transverse binary fission, if we talk about our body, if we look at our body, it is longitudinal from the head to the legs. And in our relationship, we will say that the transverse is one arm and the transverse is the other arm. So, in the transverse fission, one animal, where it is vertically divided into two, like the example of paramission is in front of you, where you first divide the nucleus in the paramission, then in the cytoplasm, it will be pinched off from the center and then it will be divided into two. Similarly, longitudinal binary fission. Longitudinal binary fission is present in the plane area. The plane area is divided from the center. If it is a plane area, then it will be divided into two. It will be divided longitudinally. That is, the division from the head to the head starts from the tail. So, it is equally divided into two halves in the longitudinal division. The same is the case with the yuglina. In the yuglina, the longitudinal binary fission is also divided. That is, the longitudinal animal will be divided. So, simply, if it is divided longitudinally, then the longitudinal binary fission is divided. If it is a transverse division, then the transverse binary fission will be divided. Multiple fission. Fission means to divide. Multiple means that it is in many organisms. When an animal is divided in many animals, or if an organism is divided in many organisms, then what will we call it? Multiple fission. For example, if we look at the tape firm, the tape firm is called the proglotted firm. If we look at the different segments of the tape firm, we call each segment a proglotted firm. So, if all the segments are separate, then the tape firm will be formed. So, one animal is divided in many pieces. After it is divided, what has it done? This process is called multiple fission. The tape firm also has multiple fission in the amoeba. How will amoeba be multifissioned? First of all, amoeba is made as a cyst. After that, its nucleus is divided. Along with dividing the nucleus, cytoplasm is also divided. The result is that we have one amoeba. Its cyst is called the restant stage. In the cyst, many small particles will first divide the nucleus, then the cytoplasm of each nucleus will be formed. So, they become amoebas. When this cyst is burst, instead of one, many amoebas will come out. And this is the multiple fission.