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( a ) What is fragmentation in organisms ? Name a multicellular organism which reproduces by this method. ( b ) How does regeneration take place? Why is this process not possible in all animals? CBSE class10 Science 20161 AnswerName a multi cellular organism which reproduces by fragmentation. cbse-biology-class10-20111 AnswerName the life process of an organism that helps in the growth of its population. CBSE- class10- Science 20151 AnswerName an organism which reproduces by spore formation. -cbse-biology-class10-20121 Answer( a ) Fertilization is possible if ovulation has taken place during middle of menstrual cycle. Give reasons . ( b ) List in tabular form two distinguishing features between a sperm and an ovum. CBSE class10 Science 20161 AnswerIndicate whether the following statements are True (T) or False (F). -cbse-biology-class81 AnswerWhat is regeneration in an organism? -cbse-biology-class10-20111 AnswerExplain, why speed is important for survival in the grasslands for animals that live there. (Hint: There are few trees or places for animals to hide in grasslands habitats.) (Science-Ncert class 6)1 AnswerWhat is fragmentation in organisms? cbse-biology-class10-20111 AnswerWhat is fragmentation in organisms? cbse-biology-class10-20111 AnswerWhat is fragmentation in organisms? cbse-biology-class10-20111 AnswerWhat is fragmentation in organisms? cbse-biology-class10-20111 AnswerWhen you add sodium hydrogen carbonate to acetic acid in a test tube, a gas liberates immediately with brisk effervescence. Name this gas. Describe the method of testing this gas. CBSE- class10- Science 20151 AnswerWhat are chromosomes? Explain how in sexually reproducing organisms the number of chromosomes in the progeny is maintained. CBSE- class10- Science 20151 AnswerWhat are the hydrocarbons? Distinguish alkanes from alke nes and each of them from alkynes giving one example of each. Also draw the structure s of each compound cited as example to justify your answer . CBSE class10 Science 20161 AnswerList two physical and two chemical properties of acetic acid which a student can test in the school laboratory. CBSE class10 Science 20161 AnswerState the meaning of “biodiversity”. List one advantage each of conserving f orests and wild life. CBSE class10 Science 20161 AnswerState and describe in brief any three main factors responsible for the rise of new species. CBSE class10 Science 20161 AnswerName the gas libe rated when ethanol reacts with S odium metal? How do we get ethe ne from ethanol? Write chemical equation to justify your answer. State the role of acid in this reaction. CBSE class10 Science 20161 AnswerList four problems caused by non – biodegradable wastes . CBSE class10 Science 20161 Answer