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 The characteristics transmitted from parents to ofspring are present in Cytoplasm Ribosome Golgi bodies Genes Genes are carriers of genetic information and are responsible for the transmission of characteristics from parents to offspring's. Genes are carriers of genetic information and are responsible for the transmission of characteristics from parents to offspring's. 3 / 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 4 / 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. 5 / 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 6 / 15 Reproduction is essential for living organisms to order to: Keep the individual organism alive Fulfll their energy requirements Maintain growth Continue the species generation after generation Reproduction is one of the important characteristic function of living things. it is essential for the continuity of species for generations to continue. Reproduction is one of the important characteristic function of living things. it is essential for the continuity of species for generations to continue. 7 / 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. 8 / 15 What is the mode of asexual reproduction in Amoeba? Binary Fission Fragmentation Budding Regeneration Or Budding 9 / 15 What is the mode of asexual reproduction in planaria? Spore Formation Fragmentation Binary Fission Regeneration 10 / 15 What is the mode of asexual reproduction in Rhizopus Spore Formation Fragmentation Budding Binary Fission 11 / 15 What is the mode of asexual reproduction in Spirogyra Spore Formation Budding Binary Fission Fragmentation 12 / 15 which of the following is a viral STD? Gonorrhoea Syphilis. Both 1 & 2 HIV-Aids And Warts 13 / 15 In flowers,what is the female reproductive part called as? Pistil Or Carpel Ovaries Filaments Stigma 14 / 15 The site of fertilization of the ovum takes place is Ovaries Fallopian Tube Callopian Tube None Of These 15 / 15 The development foetus takes place in mother’s body from Ovaries Embryo Placenta Fallopian Tube Your score is 0% Restart quiz