NCERT Solutions for Class 10 Science Chapter 8
1: Why is Reproduction in organisms important?
Reproduction is important for the survival of every living organism because without reproduction life would come to an end. There are basically two types of reproduction - asexual and sexual reproduction. Asexual reproduction is nothing but a simple cell division that produces an exact duplicate of an organism. Asexual reproduction are of various types and doesn’t need two parents. Some single-celled organisms reproduce asexually by simple cell division which is called binary fission. Some cells also reproduce by unequal division of the cells called budding.
2: What is the difference between fission and fragmentation?
Fission is a type of asexual reproduction where two or more daughter cells are produced due to the splitting of a unicellular organisms like amoeba. On the other hand, Fragmentation is a type of asexual reproduction an organisms after maturing breaks into two or more organisms example anemones. Therefore, the major difference between fission and fragmentation is that in fission, a unicellular organism breaks into two daughter cells and in s in fragmentation, a multicellular organism breaks into fragments.
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4: How can organisms reproduce asexually?
There are multiple methods in which organisms can asexually reproduce such as fragmentation where a body part or parts are broken off of the “parent” which later develops into a new organism. Budding is a procedure where a bubble-like bud grows off of the “parent” but does not detach until it is fully grown. Parthenogenesis is another process in which a female organism develops embryos without having her eggs fertilized by a male. Binary fission is one of the popular methods where a single-celled organism splits into two single-celled organisms by a normal cellular division. All the aboves mentioned asexual reproduction takes less time than sexual reproduction and doesn't even require another organism.