Tiêu đề 8 How do Organisms Reproduce - MCQs.pdf ✅

© www.bankofbiology.com 8921 510 476 1 8. HOW DO ORGANISMS REPRODUCE? - MCQs DO ORGANISMS CREATE EXACT COPIES OF THEMSELVES? 1. What is the primary role of DNA in reproduction? a) To store nutrients for the cell b) To provide energy for cellular functions c) To serve as information source for making proteins d) To transport oxygen in the body Answer: c) To serve as information source for making proteins 2. In each process of DNA copying, DNA copies will be a) similar, but not identical to the original b) identical to each other and the original c) completely different from the original d) identical to the parent cell Answer: a) similar, but not identical to the original 3. If large variations occur in DNA, the new-born cell will die because a) The cell cannot undergo further division. b) The cell will lose its energy source. c) The cell will become prone to infections. d) New DNA copy may not work with the cellular apparatus. Answer: d) 4. There is a greater possibility for the evolution of a new species in organisms which reproduce by a) binary fission b) budding c) fertilisation d) regeneration Answer: c) fertilisation MODES OF REPRODUCTION USED BY SINGLE ORGANISMS 5. A common feature of reproduction in Amoeba, spirogyra and yeast is that: a) Asexual reproduction occurs after sexual reproduction b) Asexual reproduction occurs before sexual reproduction c) Asexual reproduction does not involve gametes d) Asexual reproduction involves only one parent Answer: d) Asexual reproduction involves only one parent 6. Many unicellular organisms such as bacteria and protozoa reproduce by a process of cell division called a) fission b) ovulation c) regeneration d) non-disjunction Answer: a) fission 7. In organisms such as Amoeba and Leishmania, parent cell divides into 2 daughter cells. This is called a) Binary fission b) Fragmentation c) Budding d) Regeneration Answer: a) Binary fission 8. During favourable conditions, Amoeba reproduces by a) multiple fission b) binary fission c) budding d) fragmentation Answer: b) binary fission 9. The ability of a cell to divide into several daughter cells during reproduction in Plasmodium is called a) budding b) multiple fission c) binary fission d) reduction division Answer: b) multiple fission 10. Organisms such as Spirogyra simply breaks up into smaller pieces and grow into new individuals. This is called a) budding b) fission c) regeneration d) fragmentation Answer: d) fragmentation 11. The ability of differentiated organisms such as Hydra & Planaria to cut into many pieces and grow into separate individuals is called a) binary fission b) budding c) multiple fission d) regeneration Answer: d) regeneration 12. Regeneration is not the same as reproduction since a) Many organisms use this only to regenerate lost parts. b) It occurs only in unicellular organisms. c) It always involves the production of genetically different offspring. d) It requires the presence of specialized reproductive organs. Answer: a) 13. Which of the following is not an artificial method of vegetative propagation? a) Cutting b) Layering c) Budding d) Grafting Answer: c) Budding 14. Which of the following organisms shows budding? a) Hydra, Paramecium b) Amoeba, Yeast c) Amoeba, Paramecium d) Hydra, Yeast
© www.bankofbiology.com 8921 510 476 2 Answer: d) Hydra, Yeast 15. Plant parts like root, stem and leaves develop into new plants under appropriate conditions. This is called a) Multiple fission b) Vegetative Propagation c) Regeneration d) Fragmentation Answer: b) Vegetative Propagation 16. Which of the following is not an advantage of vegetative propagation in plants? a) It is used in layering or grafting to grow plants like sugarcane, roses or grapes. b) Plants raised by this method can bear flowers and fruits earlier than those produced from seeds. c) Seedless progenies can be produced. d) All plants are genetically dissimilar to the parent plant. Answer: d) 17. In a potato, vegetative propagation takes place by a) layering of root b) buds in leaf c) buds in stem tuber d) grafting of stem Answer: c) buds in stem tuber 18. Which plant produces buds in the notches along the leaf margin that fall on the soil and develop into new plants? a) Bryophyllum b) Mango c) Neem d) Peepal Answer: a) Bryophyllum 19. In money plants, vegetative propagation occurs through a) Stem cutting b) Root cutting c) Leaf cutting d) Tissue culture Answer: a) Stem cutting 20. The method of growing tissues or cells from a plant in an artificial medium is called a) Grafting b) Layering c) Budding d) Tissue culture Answer: d) Tissue culture 21. In tissue culture, cells are divided rapidly to form a small group of cells called a) Thalamus b) Stigma c) Callus d) Embryo Answer: c) Callus 22. Which is the most common method of reproduction in majority of fungi and bacteria? a) Budding b) Spore formation c) Binary fission d) Multiple fission Answer: b) Spore formation 23. Spore formation is present in organisms like a) Amoeba b) Hydra c) Bread mould (Rhizopus) d) Yeast (Saccharomyces) Answer: c) Bread mould (Rhizopus) 24. In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called a) filaments b) hyphae c) rhizoids d) roots Answer: b) hyphae 25. Hyphae of Rhizopus include some blob-on-a-stick structures involved in reproduction. The blobs are called a) Sporangia b) Zygospores c) Conidia d) Asci Answer: a) Sporangia SEXUAL REPRODUCTION 26. In sexual reproduction, new generation will not have twice the amount of DNAs due to a process of a) Recombination b) Crossing over c) Mitosis d) Meiosis Answer: d) Meiosis 27. During meiosis, gametes (germ cells) are formed in which a) Number of chromosomes are double but amount of DNA is half as compared to the non- reproductive cells. b) Number of chromosomes are half but amount of DNA is double as compared to the non- reproductive cells. c) Number of chromosomes and amount of DNA are half as compared to the non-reproductive cells. d) Number of chromosomes and amount of DNA are double as compared to the non-reproductive cells. Answer: c) 28. Which is true about gametes in complex organisms? a) Female gamete is small and contains food-stores. b) Female gamete is large and contains food-stores. c) Male gamete is large and motile. d) Male gamete is small and contains food-stores. Answer: b) 29. Outermost part of the flower which protects the bud is called a) Petals b) Sepals c) Stigma d) Anther Answer: b) Sepals 30. Brightly coloured parts of the flower to attract pollinators are called a) Petals b) Sepals c) Anther d) Stamen
© www.bankofbiology.com 8921 510 476 3 Answer: a) Petals 31. Male reproductive part formed of anther & filament is called a) Sepal b) Pistil c) Stamen d) Ovule Answer: c) Stamen 32. The anther contains yellowish and sticky a) Sepals b) Ovules c) Carpel d) Pollen grains Answer: d) Pollen grains 33. Pollen grains produce a) Male germ cells b) Female gametes c) Ovules d) Sepals Answer: a) Male germ cells 34. Female reproductive part of the flower is called a) Filament b) Anther c) Petal d) Pistil Answer: d) Pistil 35. Which of the following is not a part of pistil? a) Ovary b) Style b) Stigma d) Anther Answer: d) Anther 36. Middle elongated part of pistil is called a) Ovule b) Stigma c) Style d) Ovary Answer: c) Style 37. Terminal sticky part of pistil is called a) Ovule b) Stigma c) Style d) Ovary Answer: b) Stigma 38. Which of the following plants have unisexual flowers? a) Papaya, watermelon b) Hibiscus, mustard c) Hibiscus, watermelon d) Mustard, watermelon Answer: a) Papaya, watermelon 39. The flower of the Hibiscus plant is a) bisexual b) unisexual c) neuter d) very small Answer: a) bisexual 40. Pollination is the transfer of pollens from a) Stamen to style b) Style to stamen c) Stamen to stigma d) Stigma to stamen Answer: c) Stamen to stigma 41. Transfer of pollen from one flower to another by agents like wind, water or animals is called a) Crosspollination b) Self-pollination c) Hybridization d) Emasculation Answer: a) Crosspollination 42. Male germ cell fuses with the female gamete in the ovule to form zygote. It is called a) Germination b) Insemination c) Fertilization d) Implantation Answer: c) Fertilization 43. The seed that contains the future plant is called the a) cotyledons b) seed coat c) germ cells d) embryo Answer: d) embryo 44. The ovule develops a tough coat and becomes a) Seed b) Fruit c) Stem d) Root Answer: a) Seed 45. Which part of the flower forms the fruit? a) Whole flower b) Only stamens and carpel c) Only ovary d) Only carpel Answer: c) Only ovary Reproduction in Human Beings 46. The period during adolescence when the reproductive tissues begin to mature is called a) gametogenesis b) puberty c) germination d) teenage Answer: b) puberty 47. Germ cells (sperms) are formed in a) Scrotum b) Prostate c) Testes d) Vas deferens Answer: c) Testes 48. Testes are located in scrotum because a) sperm formation requires a lower temperature than body temperature b) It helps in the production of more testosterone. c) It prevents the testes from getting damaged by the abdominal pressure. d) It provides a space for the storage of urine. Answer: a) 49. The hormone testosterone which helpsin formation of sperms and changes in boys during puberty is secreted from a) Pituitary b) Testis c) Hypothalamus c) Prostate Answer: b) Testis 50. Which duct helps to deliver sperms and unites with urethra coming from urinary bladder? a) Rete testis b) Vasa efferentia c) Epididymis d) Vas deferens Answer: d) Vas deferens 51. Semen is the mixture of
© www.bankofbiology.com 8921 510 476 4 a) Sperms and fluid secretions from glands like adrenals and seminal vesicles. b) Sperms and fluid secretions from glands like prostate and hypothalamus. c) Sperms and fluid secretions from glands like prostate and seminal vesicles. d) Sperms and fluid secretions from glands like pituitary and hypothalamus. Answer: c) 52. Assertion: Transport of sperms takes place in a fluid which also provide nutrition. Reason: Prostate gland and seminal vesicles secrete in the vas deferens. a) Both A and R are true and R is the correct explanation of A. b) Both A and R are true but R is not the correct explanation of A. c) A is true but R is false. d) A is false but R is true. e) Both A and R are false. Answer: a) 53. Female germ cells (ovum or egg) are made in the a) Ovaries b) Fallopian tubes c) Uterus d) Placenta Answer: a) Ovaries 54. Which of the following is a primary sex organ in a mammal? a) Ovary b) Vagina c) Uterus d) Mammary glands Answer: c) Ovary 55. In human female, a) One egg is produced every month by one of the ovaries. b) One egg is produced everyday by one of the ovaries. c) Two eggs are produced every month by one of the ovaries. d) Two eggs are produced every month by both ovaries. Answer: a) 56. Egg is carried from the ovary to the womb (uterus) through a thin a) Vagina b) Placenta c) Oviduct (fallopian tube) d) Cervix Answer: c) Oviduct (fallopian tube) 57. In man, fertilization of ovum takes place in a) Vagina b) ovary c) uterus d) Fallopian tubes Answer: d) Fallopian tubes 58. When a sperm is deposited into the vagina which route does it travel? a) Vagina → Oviduct → Uterus → Cervix b) Vagina → Ovary → Uterus → Oviduct c) Vagina → Cervix → Uterus → Oviduct d) Vagina → Uterus → Cervix → Oviduct Answer: c) Vagina → Cervix → Uterus → Oviduct 59. When the foetus is growing inside the uterus it needs nutrients. Which part provides these nutrients? a) Placenta b) Amniotic sac c) Oviduct d) Uterus Answer: a) Placenta 60. The embryo in humans gets nutrition from the mother’s blood with the help of a disc of special tissue embedded in the uterine wall. It is called a) Placenta b) Villi c) Uterus d) Womb Answer: a) Placenta 61. Which of the following is not a function of placenta? a) Provides nutrition to embryo from the mother’s blood. b) Transports glucose & oxygen from mother to embryo. c) Removes wastes from embryo into mother’s blood. d) Produces digestive enzymes for the embryo. Answer: d) Produces digestive enzymes for the embryo. 62. Development of the human child inside the mother’s body takes about a) 9 months b) 9 months c) 10 months d) 1 year Answer: b) 9 months 63. If the egg is not fertilised, it lives for about a) One day b) Two days c) Three days d) Four days Answer: a) One day 64. The lining of uterus slowly breaks and comes out through vagina as blood & mucus. This cyclic process occurring every month is called a) Lactation b) Menstruation c) Parturition d) Implantation Answer: b) Menstruation 65. In human female, menstruation lasts for a) 1-2 days b) 2-8 days b) 8-10 days d) 12-14 days Answer: b) 2-8 days 66. Which of the following sets are sexually transmitted diseases caused by bacteria?