This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following statements best describes double fertilisation? A) A male gametes fertilises an egg cell while another male gametes fertilises a polar nucleus. B) A male gametes fertilises an egg cell and two fused polar nuclei. C) A male gametes fertilises two fused polar nuclei. D) A male gametes fertilises an egg while another male gametes fertilises two polar nuclei. Show Answer Correct Answer: D) A male gametes fertilises an egg while another male gametes fertilises two polar nuclei. 2. Diploid Microspore Mother cell undergoes ..... division to form haploid microspores A) Meiotic. B) Mitotic. C) Both of the above. D) None of the above. Show Answer Correct Answer: A) Meiotic. 3. Which of the following are the conditions for germination? A) Water and oxygen only. B) Water, oxygen and suitable temperature only. C) Water, carbon dioxide and suitable temperature only. D) Carbon dioxide and suitable temperature only. Show Answer Correct Answer: B) Water, oxygen and suitable temperature only. 4. Process in which seeds develop unfertilised female gamete A) Agamospermy. B) Parthenogenesis. C) Apomixis. D) Polyembryony. Show Answer Correct Answer: B) Parthenogenesis. 5. What is fertilisation in plant? A) The nucleus of the sperm fuses with the egg. B) The nucleus of the pollen grain enter the ovule and fuses with the egg. C) The nucleus of the sperm enter the stigma. D) The nucleus of the pollen grain enter the tube. Show Answer Correct Answer: B) The nucleus of the pollen grain enter the ovule and fuses with the egg. 6. Most common type of embryo sac: A) Bisporic. B) Tetrasporic. C) Monosporic. D) Polyspermic. Show Answer Correct Answer: C) Monosporic. 7. What do we call sex cells?Hint:This applies to plants AND animals. A) Spores. B) Eggs. C) Pollen. D) Gametes. Show Answer Correct Answer: D) Gametes. 8. The type of fertilization in which the male gamete penetrates into the ovule (egg) but fails to fuse with the egg nucleus is known as A) Polyspermy. B) Apomixis. C) Syngamy. D) Semigamy. Show Answer Correct Answer: D) Semigamy. 9. Which one of the following is correct for aquatic plants? A) All aquatic plants use water for pollination. B) Not all aquatic plants use water for pollination. C) Vallisneria flowers are pollinated by water under the water surface. D) All the above. Show Answer Correct Answer: B) Not all aquatic plants use water for pollination. 10. Intine of pollen grains is composed of: A) Lipid and protein. B) Cellulose and pectin. C) Lignin and cutin. D) Pectin and lignin. Show Answer Correct Answer: B) Cellulose and pectin. 11. How many megaspore mother cells are required to produce 100 eggs during meiosis? A) 50. B) 25. C) 400. D) 100. Show Answer Correct Answer: D) 100. 12. Following is not an example of outbreeding device A) Protandry. B) Protogyny. C) Self incompability. D) Bisexuality. Show Answer Correct Answer: D) Bisexuality. 13. A microspore mother cells forms: A) A pollen sac. B) An embryo sac. C) Pollen grains. D) An ovule. Show Answer Correct Answer: C) Pollen grains. 14. The body of ovule is fused within the funicle at: A) Hilum. B) Nucellus. C) Chalaza. D) Micropyle. Show Answer Correct Answer: A) Hilum. 15. What is the primary function of reproduction in plants? A) To produce flowers. B) To produce new plants. C) To grow taller. D) To change colour. Show Answer Correct Answer: B) To produce new plants. 16. Pollen grain consists of vegetative cell and generative cell. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Anther is generally ..... (having two lobes) and ..... A) Monothecous and unisporangiate. B) Dithecous and tetrasporangiate. C) Dithecous and uniaporangiate. D) A. monothecous and tetrasporangiate. Show Answer Correct Answer: B) Dithecous and tetrasporangiate. 18. Which of the following is a type of pollination adapted for wind? A) Cleistogamy. B) Xenogamy. C) Autogamy. D) Geitonogamy. Show Answer Correct Answer: B) Xenogamy. 19. What is incorrect for pollination by water? A) Emergent flowers above the level of water are pollinated by insects or winds. B) Pollination can take place inside or on water surface. C) All aquatic plants are pollinated by water. D) Pollen grains often possess mucilagenous sheath. Show Answer Correct Answer: C) All aquatic plants are pollinated by water. 20. Pollination is absent in- A) Bryophytes and Pteridophytes. B) Only Bryophytes. C) Only Gymnosperm. D) Only Angiosperm. Show Answer Correct Answer: A) Bryophytes and Pteridophytes. 21. Each anther has how many lobes A) 2. B) 4. C) 8. D) 1. Show Answer Correct Answer: A) 2. 22. What are the colorful and fragrant parts of a flower known as? A) Calyx. B) Petals. C) Carpels. D) Stamens. Show Answer Correct Answer: B) Petals. 23. Function of filiform apparatus is A) Stimulate division of generative cell. B) Recognize the suitable pollen at stigma. C) Produce nector. D) Guide the entry of pollen tube. Show Answer Correct Answer: D) Guide the entry of pollen tube. 24. How many main types of pollination are there in flowering plants? A) 2. B) 3. C) 4. D) 5. Show Answer Correct Answer: A) 2. 25. Which statement is correct for apomixis: A) With fertilisation diploid embryo forms. B) With fertilisation haploid embryo cell form embryo. C) Without fertilisation haploid embryo cell form embryo. D) Without fertilisation diploid embryo forms. Show Answer Correct Answer: D) Without fertilisation diploid embryo forms. 26. Chalazal pole is present A) Opposite to nucellus. B) Near the embryo sac. C) At the origin of integuments. D) Opposite to micropyle. Show Answer Correct Answer: D) Opposite to micropyle. 27. The reproductive part of the plant that attracts bees and butterflies A) Flower. B) Petals. C) Stigma. D) Stem. Show Answer Correct Answer: A) Flower. 28. Select the plant species, where emasculation is not required from artificial hybridization experiment? A) Lily. B) Papaya. C) Wheat. D) Castor. Show Answer Correct Answer: B) Papaya. 29. Exine of pollen is made up of A) Sporopollenin. B) Inorganic material. C) Sporogenous tissue. D) Spongiform tissue. Show Answer Correct Answer: A) Sporopollenin. 30. Triploid condition is observed in ..... A) Egg cell. B) Antipodals. C) Synergids. D) Primary endosperm nucleus. Show Answer Correct Answer: D) Primary endosperm nucleus. 31. What is the significance of double fertilization in flowering plants? A) It is a type of asexual reproduction. B) It results in the formation of both endosperm and embryo. C) It leads to the formation of seeds only. D) It prevents self-pollination. Show Answer Correct Answer: B) It results in the formation of both endosperm and embryo. 32. During the process of fertilisation the pollen tube of thepollen grain usually enters the embryo sac through A) Micropyle. B) Nucellus. C) Chalaza. D) Integument. Show Answer Correct Answer: A) Micropyle. 33. The thin stalk that supports the anther. A) Filament. B) Stamen. C) Anther. D) Pistil. Show Answer Correct Answer: A) Filament. 34. True fruit is directly derived from A) Stem. B) Root. C) Ovary. D) None of these. Show Answer Correct Answer: C) Ovary. 35. During fertilisation generative nucleus divides forming A) 2 male gametes. B) 1 female gamete. C) 1 male gamete. D) 2 female gametes. Show Answer Correct Answer: A) 2 male gametes. 36. What is produced from sexual reproduction in plants? A) Babies. B) Flowers. C) Eggs. D) Seeds. E) Leaves. Show Answer Correct Answer: D) Seeds. 37. SECTION B-FILL IN THE BLANKS. The basal cell of embryo is called ..... A) Endosperm. B) Suspensor. C) Radicle. D) Cotyledon. Show Answer Correct Answer: B) Suspensor. 38. Sperm cells of a flowering plant are contained in ..... A) Ovules. B) Pollen Grains. C) All the above. D) None of the above. Show Answer Correct Answer: B) Pollen Grains. 39. Which of the following is a special mode of reproduction in flowering plants? A) Fertilization. B) Germination. C) Pollination. D) Apomixis. Show Answer Correct Answer: D) Apomixis. 40. The hilum is a scar on the A) Fruit, where it was attached to pedicel. B) Seed, where funicle was attached. C) Seed, where micropyle was present. D) Fruit, where style was present. Show Answer Correct Answer: B) Seed, where funicle was attached. 41. Adicotyledonousplantbearsflowersbutneverproducesfruitsandseeds.Themostprobablecausefortheabovesituationis: A) Plantisdioeciousandbearsonlypistillateflowers. B) Plantisdioeciousandbearsbothpistillateandstaminateflowers. C) Plantismonoecious. D) Plantisdioeciousandbearsonlystaminateflowers. Show Answer Correct Answer: D) Plantisdioeciousandbearsonlystaminateflowers. 42. The total number of nuclei involved in double fertilisationin angiosperms are A) Three. B) Four. C) Two. D) Five. Show Answer Correct Answer: D) Five. 43. Exine of pollen contains: A) Pectin. B) Lignin. C) Cutin. D) Sporopollenin. Show Answer Correct Answer: D) Sporopollenin. 44. A female reproductive structure in a flower is called a(n) ..... A) Anther. B) Filament. C) Pistil. D) Stamen. Show Answer Correct Answer: C) Pistil. 45. Zygote continuously divided by mitosis to form A) Seed coat. B) Seed. C) Embryo. D) Endosperm. Show Answer Correct Answer: C) Embryo. 46. Syngamy results in: A) Embryo sac. B) Triploid nucleus. C) Endosperm. D) Diploid zygote. Show Answer Correct Answer: D) Diploid zygote. 47. What is the main advantage of cross-pollination? A) Reduced need for pollinators. B) Increased genetic diversity. C) Faster seed development. D) Higher seed viability. Show Answer Correct Answer: B) Increased genetic diversity. 48. How many functional megaspores are produced when a single megaspore mother cell undergoes meiotic division? A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: C) 1. 49. Undifferentiated sepal and petal A) Stigma. B) Style. C) Tepal. D) Filament. Show Answer Correct Answer: C) Tepal. 50. How do bees aid in pollination? A) They transfer pollen from one flower to another. B) They produce and release pollen that is given to a plant. C) All the above. D) None of the above. Show Answer Correct Answer: A) They transfer pollen from one flower to another. 51. Which is NOT a mode of apomixis? A) Pollination. B) Apospory. C) Adventive embryony. D) Parthenogenesis. Show Answer Correct Answer: A) Pollination. 52. Pollen grains must be transferred from the anther to the stigma of the same flower or another flower. This process is called ..... A) Condensation. B) Germination. C) Fertilisation. D) Pollination. Show Answer Correct Answer: D) Pollination. 53. What is the organ of sexual reproduction in flowering plants? A) Flower. B) Leaf. C) Stem. D) Root. Show Answer Correct Answer: A) Flower. 54. A 7 celled and 8 nucleated structure in angiosperms is called A) Microspore. B) Embryo sac. C) Megasporangium. D) Microsporangium. Show Answer Correct Answer: B) Embryo sac. 55. Pollination is the process by which the pollen grains are transferred from the ..... to the ..... A) Stigma ovary. B) Stigma filament. C) Anther ovary. D) Anther stigma. Show Answer Correct Answer: D) Anther stigma. 56. Inaflower, ifthemegasporemothercellformsmegasporeswithoutundergoingmeiosisandifoneofthemegasporesdevelopsintoanembryosac, itsnucleiwouldbe: A) Haploid. B) Diploid. C) A few haploid and a few diploid. D) With varying ploidy. Show Answer Correct Answer: B) Diploid. 57. The cell that gives rise to male gametes in the pollen grain is A) Vegetative Cell. B) Generative Cell. C) All the above. D) None of the above. Show Answer Correct Answer: B) Generative Cell. 58. What is the function of the corolla? A) Contains ovules. B) Protects the flower. C) Attracts pollinators. D) Supports the flower. Show Answer Correct Answer: C) Attracts pollinators. 59. Megasporangium along with its protective integuments is called A) Ovule. B) Chalaza. C) Funicle. D) Ovary. Show Answer Correct Answer: A) Ovule. 60. The anther produces pollen grains that contain the male sex cells. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 1Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 2Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 3Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 4Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 5Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 6Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 7Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books