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 In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called Filaments Hyphae Rhizoids Roots In Rhizopus fungus, the fne thread-like structures that spread on the surface of bread are called hyphae In Rhizopus fungus, the fne thread-like structures that spread on the surface of bread are called hyphae 3 / 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. 4 / 15 Which among the following statements are true for sexual reproduction in fowering plants? It requires two types of gametes. Fertilisation is a compulsory event. It always results in the formation of zygote. Offsprings formed are clone 1 , 2 and 3 2 and 3 1 and 3 2 and 4 Sexual reproduction involves fertilisation of male and female gametes to produce zygote having genetic variations. Clones cannot be produced through it as clones are identical copies of parent organism. Sexual reproduction involves fertilisation of male and female gametes to produce zygote having genetic variations. Clones cannot be produced through it as clones are identical copies of parent organism. 5 / 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. 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 Example of bisexual fowers. Watermelon Papaya Hibiscus Corn Bisexual flowers contains both reproductive organs, male & female. Bisexual flowers contains both reproductive organs, male & female. 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 Rhizopus Spore Formation Fragmentation Budding Binary Fission 10 / 15 Which of the following is a Bacterial STD? Warts Syphilis Hiv-Aids All Of These 11 / 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 12 / 15 The development foetus takes place in mother’s body from Ovaries Embryo Placenta Fallopian Tube 13 / 15 A surgical method of Blocking vas deferens to prevent pregnancy is done for Females Males Both 1 & 2 None Of These 14 / 15 Total number of chromosomes present in human beings are 46 23 24 48 15 / 15 The number of chromosomes shared from both male & female are 26 from each 23 from each 46 from each 12 from each Your score is 0% Restart quiz