Class 10 Science Notes & NCERT Solutions-How do organisms reproduce

1. Class 10 Science Notes & NCERT Solutions-How do Organisms Reproduce Chapter 8 : How do Organisms Reproduce Class 10 Science :In this article, we will discuss ‘How do Organisms Reproduce’of 10th Class Science. Before understanding how does an organism reproduce, it is important for us to understand why the organism reproduce? Reproduction is necessary to keep the life-process ongoing. Do organisms create exact copies of themselves? We will discuss one activity here. Look around in your Class 10Classroom.You will find that all students have similar body structure. Reproduction is the process,making copies of the blueprints of body structure. We know the chromosomes in the nucleus of the cell contain information for inheritance of features from parents to the next generation in the form of DNA (deoxyribo nucleic acid) molecules. The DNA is the information source of making protein. If somehow, this information is changed, then the body design or structure will differ. Now, as a 10th Class Science student, we know that a basic event in reproduction is the creation of the DNA copies. The chemical reaction of the cell creates two copies of the DNA in a reproducing cell and they will be needed to be separated from each other. The DNA copied is accompanied by the creation of an additional cellular apparatus and then the DNA copies, each with its own apparatus. So, a cell divides to give rise to two cells.

2. All living organisms reproduce mainly through: All living organisms reproduce mainly through: – 1. Asexual reproduction 2. Sexual reproduction Let’s proceed further and discuss in detail: Let’s proceed further and discuss in detail: Asexual Reproduction 1. Single celled organisms reproduce through 1. Fission Binary Fission Multiple Fission 2. Budding 3. Spore formation 2. Asexual reproduction of multicellular organisms oFragmentation and regeneration oVegetative propagation Natural Vegetative propagation Artificial vegetative propagation Artificial vegetative propagation Single celled organisms reproduce through the following ways:- Asexual reproduction of multicellular organisms Fragmentation and regeneration Natural Vegetative propagation Fission The process when the cells in unicellular organisms become fully mature and it gets The process when the cells in unicellular organisms become fully mature and it gets The process when the cells in unicellular organisms become fully mature and it gets divided into two or more parts is called Fission. divided into two or more parts is called Fission. In organisms like amoeba splitting can take place in any plane, but in some other organisms binary fusion occurs in a organisms binary fusion occurs in a definite orientation. In organisms like amoeba splitting can take place in any plane, but in some other In organisms like amoeba splitting can take place in any plane, but in some other Other single-celled organisms such as Plasmodium (the malaria parasite) split into many daughter cells at the same time by multiple fission. many daughter cells at the same time by multiple fission. celled organisms such as Plasmodium (the malaria parasite) split into celled organisms such as Plasmodium (the malaria parasite) split into

3. Budding Organism like hydra use regenerative cells for reproduction in the process of budding In hydra, the repeated cell division at one specific rate leads to the development of a bud. These buds develop into tiny individuals on maturity the get divided from the These buds develop into tiny individuals on maturity the get divided from the parent Organism like hydra use regenerative cells for reproduction in the process of budding In hydra, the repeated cell division at one specific rate leads to the development of a bud. These buds develop into tiny individuals on maturity the get divided from the body and become independent individuals body and become independent individuals Organism like hydra use regenerative cells for reproduction in the process of budding In hydra, the repeated cell division at one specific rate leads to the development of a bud. Spore formation In this method of reproduction, the parent plant produces hundreds of tiny spores, which The microscopic, hard and unaffected figures which are In this method of reproduction, the parent plant produces hundreds of tiny spores, which can grow into new plants. The microscopic, hard and unaffected figures which are round in shape and can grow into a new plant under appropriate conditions. They are known as Spores. In this method of reproduction, the parent plant produces hundreds of tiny spores, which The microscopic, hard and unaffected figures which are n grow into a new plant under appropriate conditions. They are n grow into a new plant under appropriate conditions. They are Spore formation in Rhizopus Spore formation in Rhizopus Regeneration When the individual is broken or cut into many pieces, the ability to give rise to a new organism is called regeneration.This organism is called regeneration.This process is commonly found in the Hydra and process is commonly found in the Hydra and When the individual is broken or cut into many pieces, the ability to give rise to a new When the individual is broken or cut into many pieces, the ability to give rise to a new

4. Planaria. The special cells carry out this process. These cells proliferate and make a Planaria. The special cells carry out this process. These cells proliferate and make a large number of cells. Different cells undergo changes to become various cell types and tissues. Planaria. The special cells carry out this process. These cells proliferate and make a large number of cells. Different cells undergo changes to become various cell types and large number of cells. Different cells undergo changes to become various cell types and Regeneration in Hydra Fragmentation During this process, filament of Spirogyra simply breaks up into smaller pieces upon maturation. These pieces grow into new individuals. maturation. These pieces grow into new individuals. During this process, filament of Spirogyra simply breaks up into smaller pieces upon During this process, filament of Spirogyra simply breaks up into smaller pieces upon Vegetative Propagation In this process, the new plant is produced from any vegetative part of the plant such In this process, the new plant is produced from any vegetative part of the plant such as In this process, the new plant is produced from any vegetative part of the plant such root, stem, leaf, etc. In the next article Class 10 Science Notes Class 10 Science Notes, we will talk about sexual reproduction. , we will talk about sexual reproduction. For NCERT solutions class 10, papers, kindly visit : www.takshilalearning.com , kindly visit : www.takshilalearning.com NCERT solutions class 10, CBSE board exam practice, CBSE class 10 sample CBSE class 10 sample Or call us : 8800999280/8800999284/011 8800999280/8800999284/011-45639131