(i) Binary fission: In binary fission, a single parent cell is divided into two equal individual cells as in Amoeba. There are mainly two methods of asexual reproduction: Asexual reproduction takes place in Amoeba, Hydra, yeast, starfish, sponges, etc. In this type of reproduction, sex cells (gametes) are not produced and no fusion of gametes takes place for the reproduction of zygote or offsprings. The mode of reproduction in which only a single parent is involved is called asexual reproduction. Describe two methods of asexual reproduction in animals. (ii) It is formed by the repeated division of the zygote.ĭefine asexual reproduction. (ii) It is formed by the fusion of male gamete or sperm and female gamete or ova (egg). (i) It is multicelled, i.e., it contains many cells. (i) It is a single celled, i.e., it contains only one cell. Give two differences between a zygote and a foetus. A zygote is formed as a result of fertilisation.Binary fission is a method of asexual reproduction.Fertilisation is necessary even in asexual reproduction.Egg laid after fertilisation is made up of a single cell.A new human individual develops from a cell called gamete.External fertilisation takes place in frog.Oviparous animals give birth to young ones.Indicate whether the following statements are True (T) or False (F). (c) The number of nuclei present in a zygote is: (b) A tadpole develops into an adult frog by the process of: In human being, the fertilisation takes place inside the female body, known as internal fertilisation. The nuclei of the sperm and the egg fuse to form a single nucleus resulting in the formation of a fertilised egg called zygote. In the process of fertilisation, sperms come in contact with an ova (egg). Reproduction is a vital phenomenon on this planet earth which is essential for existence and continuity of life and species on it, generation after generation.ĭescribe the process of fertilisation in human beings. Reproduction in Animals Class 8 Science NCERT Textbook QuestionsĮxplain the importance of reproduction in organisms. Topics and Sub Topics in Class 8 Science Chapter 9 Reproduction in Animals: Section Name NCERT Solutions for Class 8 Science Chapter 9 Reproduction in Animals Lakhmir Singh Science Class 8 Solutions.PS Verma and VK Agarwal Biology Class 9 Solutions.NCERT Solutions for Class 9 Foundation of IT.NCERT Solutions for Class 9 Social Science.NCERT Solutions for Class 10 Foundation of Information Technology.NCERT Solutions For Class 10 Hindi Kritika.NCERT Solutions For Class 10 Hindi Kshitiz.NCERT Solutions For Class 10 Hindi Sparsh.NCERT Solutions For Class 10 Hindi Sanchayan.NCERT Solutions for Class 10 Social Science.NCERT Solutions for Class 11 Indian Economic Development.NCERT Solutions for Class 11 Political Science.NCERT Solutions for Class 11 Psychology.NCERT Solutions for Class 11 Entrepreneurship.NCERT Solutions for Class 11 Accountancy.NCERT Solutions for Class 11 Business Studies.NCERT Solutions for Class 11 Computer Science (Python).NCERT Solutions for Class 12 Psychology.NCERT Solutions for Class 12 Political Science.NCERT Solutions for Class 12 Entrepreneurship.NCERT Solutions for Class 12 Macro Economics.NCERT Solutions for Class 12 Micro Economics.NCERT Solutions for Class 12 Accountancy.
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