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i, , & Experiment 12.1, , ONL, , Studying binary fission in Amoeba with the help of prepared slide,, , , , ' MATERIALS REQUIRED, , , , nxiys, , Binary fission in Amoeba, tt Wee, , ie, , 1, Prepared slide of Amoeba 2. Microscope., , , , ea, , COMMENTS es, : ; Fig. 12.1, , For binary fission in Amoeba:, 1, It is the simplest and commonest type, 2. The parent body divides into two daughter Amoeba cells by mitosis cell division, Hence,, , 3. It takes place in favourable conditions when plenty of food is available., becomes first spherical and the nucleus becomes dumbbell-shaped and then divides ,, , qQ, ta =, ¢, , is, , (, , of method of reproduction in unicellular organisms like Amoeba,, called binary fission. A, , 4, During the process, the body, , into two daughter nuclei., 5. Bach daughter cell gets a daughter nucleus. The body of Amoeba constricts in the middle forming two daughter, , cells., 6. Each binary fission takes about 30 minutes., , - Experiment 12.2, eeCGaiu, , Studying budding in yeast with the help of prepared slide., , , , MATERIALS REQUIRED, , 1. Prepared slide of yeast 2. Microscope., , COMMENTS, For budding in Yeast cells:, 1. It is the slide of yeast cells showing budding., 2. It is the common method of reproduction in yeast cells., 3. During the process a small portion of the cell wall of the yeast cell, softens and buldges out to form a bud., , 4. The bud develops into a daughter cell. ie, 5. The mother cell divides mitotically. The daughter nucleus moves into the daughter cell bud., , 6. The daughter cell grows big to the size of mother cell and then, it separates out. Sometimes it is attached to mother, , cell and starts giving out bud. Therefore, a chain of buds may be formed from a cell, —$—$—$— eee eee, , NOTE.