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 Offspring produced by asexual method of reproduction have more similarity among themselves because: Asexual reproduction involves only one parent Asexual reproduction does not involve gametes Asexual reproduction occurs before sexual reproduction Asexual reproduction occurs after sexual reproduction only one parent is involved in the Asexual reproduction ,there is no fusion of male and female gamates. only one parent is involved in the Asexual reproduction ,there is no fusion of male and female gamates. 2 / 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. 3 / 15 The number of chromosomes in parents and offsprings of a particular species remains constant due to: Halving of chromosomes during gamete formation Doubling of chromosomes after zygote formation Halving of chromosomes during gamete formation Doubling of chromosomes after gamete formation Halving of chromosomes after gamate formation Reduction division (meiosis) takes place during gamete formation. Reduction division (meiosis) takes place during gamete formation. 4 / 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. 5 / 15 Factors responsible for the rapid spread of bread mould on slices of bread are: Large number of spores Availability of moisture and nutrients in the bread Presence of tubular branched hyphae Formation of round shaped sporangia 1 2 1 And 2 1 and 3 Bread mould prefers damp/warm conditions with ample nutrient supply, on which air-borne spores land and germinate. Bread mould prefers damp/warm conditions with ample nutrient supply, on which air-borne spores land and germinate. 6 / 15 Which among the following diseases is not sexually transmitted? Syphillis Hepatitis HIV-AIDS Gonorrhoea Hepatitis is not a sexually transmitted disease. It is a water-borne viral disease compared to other options. Hepatitis is not a sexually transmitted disease. It is a water-borne viral disease compared to other options. 7 / 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. 8 / 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. 9 / 15 Example of unisexual fowers. Papaya Mustard Hibiscus Rose Unisexual flowers contains only one reproductive organ, either male or female. Unisexual flowers contains only one reproductive organ, either male or female. 10 / 15 What is the mode of asexual reproduction in Rhizopus Spore Formation Fragmentation Budding Binary Fission 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 Which pollination increases genetic uniformity and decreases variations Cross Pollination Self Pollination Both 1 & 2 None Of These 14 / 15 Which of the following is surgical method of birth control in females? Tubectomy Vasectomy Both 1 & 2 None Of These 15 / 15 Total number of chromosomes present in human beings are 46 23 24 48 Your score is 0% Restart quiz