0 123456789101112131415 Science : Ch 08 – How do Organisms Reproduce This test is designed based on NCERT Syllabus for Class 10 Topics : How do Organisms Reproduce Each time random 15 questions will be displaced So retake the quiz till you have mastered all the questions 1 / 15 Fertilisation is the process of Transfer of male gamete to female gamete Fusion of nuclei of male and female gamete. Adhesion of male and female reproductive organs The formation of gametes by a reproductive organ formation of single cell during sexual reproduction by fusion of nuclei of male and female gamates. formation of single cell during sexual reproduction by fusion of nuclei of male and female gamates. 2 / 15 Characters that are transmitted from parents to ofspring during reproduction Only similarities with parents Only variations with parents Both similarities and variations with parents Neither similarities nor variations similarities due to sharing of chromosomes from both the parents variation due to mutuation ,genetic recombination similarities due to sharing of chromosomes from both the parents variation due to mutuation ,genetic recombination 3 / 15 The ability of a cell to divide into several cells during reproduction in Plasmodium is called Budding vision Reduction division Binary fission multiple fission Multiple fission Repeated division of an organism to produce many daughter cells simultaneously. Repeated division of an organism to produce many daughter cells simultaneously. 4 / 15 Choose the precise statement(s) on budding in yeast from the following: A parent cell divides into two or more daughter cells and here the parent identity is lost In this the elongated nucleus divides to form two or more daughter nuclei. A bud arises from a particular region on a parent body After detaching from the parent body the bud grows into a new independent individual Budding in which a bud arises from a particular region on a parent body. And after detaching from the parent body the bud grows into a new independent individual Budding in which a bud arises from a particular region on a parent body. And after detaching from the parent body the bud grows into a new independent individual 5 / 15 During adolescence, several changes occur in the human body. mark one change from the following associated with sexual maturation in boys: Loss of milk teeth Increase in height Cracking of voice Weight gain Cracking of voice in males is due to male hormone testosterone, which is produced after sexual maturation Cracking of voice in males is due to male hormone testosterone, which is produced after sexual maturation 6 / 15 The number of chromosomes in parents and ofsprings of a particular species remains unchanged due to Doubling of chromosomes during gamate formation. Halving of chromosomes during gamate formation Halving of chromosomes during zygote formation Doubling of chromosomes during gamate formation The gametes are reproductive cells. They contain only half the number of chromosomes as compared to the normal cells. The gametes are reproductive cells. They contain only half the number of chromosomes as compared to the normal cells. 7 / 15 Slides of binary fission in Amoeba and budding in yeast were given for observa group of students. Some of the observations reported by the group are given below: Cytokinesis was observed in the yeast cell. A chain of buds were observed in Amoeba. Single cell of Amoeba and single cell of yeast were undergoing binary fission and budding respectively Elongated nucleus was dividing to form two daughter nuclei in Amoeba 3 and 4 2 and 3 3 1 and 4 8 / 15 Assertion (A): Variation is useful for the survival of species over time. Reason (R) : Populations of organisms fill well-defined places in the ecosystem, using their ability to reproduce Both (A) and (R) are true and (R) is correct explanation of the assertion Both (A) and (R) are true but (R) is not the correct explanation of the assertion (A) is true but (R) is false (A) is false but (R) is true Reproduction is linked to the stability of populations of species., but variation is useful for the survival of species. Reproduction is linked to the stability of populations of species., but variation is useful for the survival of species. 9 / 15 Example of bisexual fowers. Watermelon Papaya Hibiscus Corn Bisexual flowers contains both reproductive organs, male & female. Bisexual flowers contains both reproductive organs, male & female. 10 / 15 What is the mode of asexual reproduction in Spirogyra Spore Formation Budding Binary Fission Fragmentation 11 / 15 which of the following is a viral STD? Gonorrhoea Syphilis. Both 1 & 2 HIV-Aids And Warts 12 / 15 Name the organ that produces sperms in human males. Testes Testosterone Both 1 & 2 None Of These 13 / 15 What do you understand by Puberty? The age at which the reproductive organs of boys and girls become non functional. The age at which the reproductive organs of boys and girls become functional. It is a process of fertilisation in boys and girls. None of these 14 / 15 In flowers,what is the female reproductive part called as? Pistil Or Carpel Ovaries Filaments Stigma 15 / 15 Total number of chromosomes present in human beings are 46 23 24 48 Your score is 0% Restart quiz