This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the function of the calyx in a flower? A) Attracts pollinators. B) Protects the flower in the bud stage. C) Produces pollen grains. D) Contains ovules. Show Answer Correct Answer: B) Protects the flower in the bud stage. 2. What must happen for fertilization to occur in flowering plants A) The plant must be exposed to sunlight during pollination. B) The sperm cells in the pollen tube must be able to reach the eggs in the ovules. C) The eggs in the ovules must be able to reach the top of the stigma where pollen is trapped. D) All of these. Show Answer Correct Answer: B) The sperm cells in the pollen tube must be able to reach the eggs in the ovules. 3. Whorl of stamens in flower represents A) Gynoecium. B) Androecium. C) Calyx. D) Corolla. Show Answer Correct Answer: B) Androecium. 4. Which of the following parts will develop into a fruit after fertilisation in plants? A) Ovary. B) Ovule. C) Integument. D) Triploid nucleus. Show Answer Correct Answer: A) Ovary. 5. Which process involves the transfer of pollen grains from the anther to the stigma? A) Pollination. B) Fertilisation. C) Germination. D) Seed Dispersal. Show Answer Correct Answer: A) Pollination. 6. The dithecous anther has A) Single microsporangium. B) 8 microsporangia. C) 4 microsporangia. D) 2 microsporangia. Show Answer Correct Answer: C) 4 microsporangia. 7. The root cell of the wheat plant has 42 chromosomes. What would be the number of chromosomes in the synergid cell? A) 21. B) 14. C) 7. D) 28. Show Answer Correct Answer: A) 21. 8. What is the primary role of seed dispersal? A) To promote self-pollination. B) To prevent competition among seedlings. C) To ensure fertilization. D) To enhance fruit formation. Show Answer Correct Answer: B) To prevent competition among seedlings. 9. Which word could describe the stigma in a wind pollinated flower? A) Light. B) Feathery. C) Sticky. D) Smooth. Show Answer Correct Answer: B) Feathery. 10. Which of the following statement is incorrect about Exine layer A) Exine is made up of sporopollenin. B) Sporopollenin is non-degradable by withstanding acids and bases. C) Exine is a continuous layer. D) Exine has germ pores. Show Answer Correct Answer: C) Exine is a continuous layer. 11. What is the term for the structure that develops from the ovary after fertilization? A) Seed. B) Pollen. C) Fruit. D) Endosperm. Show Answer Correct Answer: C) Fruit. 12. What is the internal structure of a typical dicot seed? A) Three cotyledons. B) Single cotyledon. C) Two cotyledons. D) No cotyledons. Show Answer Correct Answer: C) Two cotyledons. 13. What is the function of the stamen in a flower? A) Attracts pollinators. B) Produces ovules. C) Produces pollen grains. D) Protects the flower. Show Answer Correct Answer: C) Produces pollen grains. 14. Pollen grains germinate A) On stigma. B) Inside ovary. C) In style. D) Inside embryosac. Show Answer Correct Answer: A) On stigma. 15. Which one of the following is the correct order in which a plant may reproduce? A) Fertilization, pollination, germination, seed dispersal, seed formation. B) Germination, pollination, seed dispersal, fertilization, seed formation. C) Pollination, fertilization, seed formation, seed dispersal, germination. D) None of the above. Show Answer Correct Answer: C) Pollination, fertilization, seed formation, seed dispersal, germination. 16. Residual and Persistant Nucellus is called A) Perisperm. B) Endosperm. C) Endocarp. D) Pericarp. Show Answer Correct Answer: A) Perisperm. 17. Germpores are actually A) Thin area in intine. B) Apertures in intine. C) Thick area in intine. D) Apertures in exine. Show Answer Correct Answer: D) Apertures in exine. 18. Stamen is a modification of A) Leaf. B) Microsporophyll. C) Shoot. D) Megasporophyll. Show Answer Correct Answer: B) Microsporophyll. 19. Entry of Pollen tube through micropyle is A) Chalazogamy. B) Mesogamy. C) Pseudogamy. D) Porogamy. Show Answer Correct Answer: D) Porogamy. 20. Which of the following is NOT from a bulb? A) Garlic. B) Tulip. C) Water chestnut. D) Onion. Show Answer Correct Answer: C) Water chestnut. 21. Tapetum is important because it: A) Forms ovule. B) Forms pollen tube. C) Nourishes developing pollen. D) Forms embryo. Show Answer Correct Answer: C) Nourishes developing pollen. 22. Self pollination may have disadvantages. Which of the following is an advantage? A) Harmless and useless characters are eliminated naturally. B) It increases recessive traits regularly. C) It increases homozygosity. D) It reduces vigour and vitality. Show Answer Correct Answer: A) Harmless and useless characters are eliminated naturally. 23. The part of the plant that holds the leaves and flowers A) Filament. B) Stalk. C) Style. D) Stem. Show Answer Correct Answer: D) Stem. 24. The flower parts that are a varied color A) Stem. B) Petals. C) Seed. D) Leaves. Show Answer Correct Answer: B) Petals. 25. What is the term for the interaction between pollen and pistil that can lead to fertilization? A) Fertilization. B) Pollen-pistil interaction. C) Pollination. D) Gametogenesis. Show Answer Correct Answer: B) Pollen-pistil interaction. 26. What develops from the ovules? A) Pollen. B) Leaves. C) Fruit. D) Seeds. Show Answer Correct Answer: D) Seeds. 27. Which of the following contains more than one nucleus A) Antipodal cells. B) Central cell. C) Egg apparatus. D) Synergids. Show Answer Correct Answer: B) Central cell. 28. The precautionary measures in artificial hybridation is / are A) Emasculation only. B) Bagging only. C) Both emasculation and bagging. D) Tagging. Show Answer Correct Answer: C) Both emasculation and bagging. 29. Fusion of one of the male gametes with egg nucleus isreferred to as A) Generative fertilisation. B) Syngamy. C) Vegetative fertilisation. D) Both (a) and (b). Show Answer Correct Answer: D) Both (a) and (b). 30. What initiates the formation of endosperms? A) Double fusion. B) Fusion. C) Fertilization. D) Triple fusion. Show Answer Correct Answer: D) Triple fusion. 31. Artificial hybridisation is one of the major approaches of crop improvement programme. For the bisexual flower it includes the following steps in correct sequence. A) Bagging, pollination, rebagging. B) Emasculation, bagging, pollination, rebagging. C) Bagging, emasculation, pollination, rebagging. D) Pollination, bagging, rebagging. Show Answer Correct Answer: B) Emasculation, bagging, pollination, rebagging. 32. Which function of tapetum is correct? A) Transportation of nutrients to inner side of anther. B) Helps in pollen wall formation. C) Synthesis of callase enzymes for separation of microspore tetrads. D) All of the above. Show Answer Correct Answer: D) All of the above. 33. Section D-One-word answers (convert to MCQ):Select the correct one-word term for the stalk attaching the ovule to the placenta. A) Filament. B) Pedicel. C) Funicle. D) Hilum. Show Answer Correct Answer: C) Funicle. 34. There is no genetic variety among the offspring A) Asexual reproduction. B) Sexual reproduction. C) All the above. D) None of the above. Show Answer Correct Answer: A) Asexual reproduction. 35. Cleistogamy can prevent A) Only autogamy. B) Both autogamy and geitonogamy. C) Both geitonogamy and xenogamy. D) Only xenogamy. Show Answer Correct Answer: C) Both geitonogamy and xenogamy. 36. SECTION B-FILL IN THE BLANKS. Fill in the blank:The process of formation of megaspores is called ..... A) Parthenocarpy. B) Megasporogenesis. C) Microsporogenesis. D) Syngamy. Show Answer Correct Answer: B) Megasporogenesis. 37. Intine of pollen grains is made up of A) Fat-like sporopollenin. B) Callose. C) Cellulose. D) Pecto-cellulose. Show Answer Correct Answer: D) Pecto-cellulose. 38. Assertion:Pollen grains are well preserved as fossils. Reason:Pollen posses sporopollenin. A) B. B) D. C) A. D) C. Show Answer Correct Answer: C) A. 39. What does dispersal means? A) Growth of plant from seed into young plant. B) Transfer of pollen grain from anther to stigma. C) Transportation of seeds and fruits away from parent plant. D) Process involving fusion of nuclei to form a zygote and production of genetically dissimilar offspring. Show Answer Correct Answer: C) Transportation of seeds and fruits away from parent plant. 40. The coconut water from tender coconut is A) Cellular endosperm. B) Free nuclear endosperm. C) Both cellular and nuclear endosperm. D) Free nuclear embryo. Show Answer Correct Answer: B) Free nuclear endosperm. 41. Pollen grain divides to form: A) 2-celled structure. B) 3-celled structure. C) Both. D) None. Show Answer Correct Answer: C) Both. 42. The flowers of a plant are not sweet-scented and it doesn't produce nectar. How can it likely dispersed by? A) By explosive action. B) By water. C) By insects. D) By wind. Show Answer Correct Answer: D) By wind. 43. The female part of the flower has three parts. They are: A) The style, stigma, and ovary. B) The pistil, stigma, and pollen. C) The filament, style, and anther. D) The filament, anther, and stigma. Show Answer Correct Answer: A) The style, stigma, and ovary. 44. Dehiscence of anther in mesophytes is caused by A) Hydration of anthers. B) Dehydration of anthers. C) Mechanical injury. D) None of these. Show Answer Correct Answer: B) Dehydration of anthers. 45. Strawberry plants reproduce through ..... ? A) Leaves. B) Underground stems. C) Bulbs. D) Runners. Show Answer Correct Answer: D) Runners. 46. The number of meiotic divisions required to produce 400 seeds in pea plant A) 200. B) 100. C) 500. D) 400. Show Answer Correct Answer: C) 500. 47. Organisms in the population are identical, so none of them have an advantage for survival if the environment changes A) Asexual reproduction. B) Sexual reproduction. C) All the above. D) None of the above. Show Answer Correct Answer: A) Asexual reproduction. 48. Why do parent plants want their seeds to disperse far away from them? A) Sadly, we all have to leave home at some point!. B) To stop competition for the same resources. C) The parent plant is jealous of the seedling. D) The parent plant feels it is important that the seed goes travelling before it commits to its new home. Show Answer Correct Answer: B) To stop competition for the same resources. 49. The male gametophyte is: A) Pollen grain. B) Endosperm. C) Embryo. D) Ovule. Show Answer Correct Answer: A) Pollen grain. 50. Science of cultivation, breeding, marketing and arrangement of flowers is called A) Anthology. B) Horticulture. C) Floriculture. D) Arboriculture. Show Answer Correct Answer: C) Floriculture. 51. Pollen tube usually enters the ovary through: A) Stigma. B) Style. C) Ovary wall. D) Placenta. Show Answer Correct Answer: B) Style. 52. SECTION B-FILL IN THE BLANKS. In most angiosperms, ..... megaspore is functional. A) Two. B) Three. C) One. D) Four. Show Answer Correct Answer: C) One. 53. Section D-One-word answers (convert to MCQ):Select the correct one-word term for the site of pollen germination. A) Ovary. B) Style. C) Anther. D) Stigma. Show Answer Correct Answer: D) Stigma. 54. False fruit is a fruit in which A) Only ovary take part in fruit development. B) Only embryo take part in fruit development. C) Only chalazal cells take part in fruit development. D) Ovary and other floral part are included in fruit development. Show Answer Correct Answer: D) Ovary and other floral part are included in fruit development. 55. How many times of mitosis occurs to form an embryo sac? A) 3. B) 4. C) 2. D) 1. Show Answer Correct Answer: A) 3. 56. Runners are stems that grow ..... A) Very high. B) Horizontally. C) Diagonally. D) Vertically. Show Answer Correct Answer: B) Horizontally. 57. What is the fate of the male gametes discharged in the synergid? A) One fuses with egg other(s) degenerate (s) in the synergid. B) All fuse with the egg. C) One fuses with the egg, other(s) fuse(s) with synergid nucleus. D) One fuses with the egg and other fuses with central cell nuclei. Show Answer Correct Answer: D) One fuses with the egg and other fuses with central cell nuclei. 58. Match column I with column II and select the correct option from the given codes. Column I Column IIA. Monoecious (i) Primula B. Dioecious (ii) MaizeC. Cleistogamous (iii) Date palmD Heterostyly (iv) Commelina A B C D A) (iii) (ii) (iv) (i). B) (ii) (iii) (i) (iv). C) (i) (ii) (iii) (iv). D) (ii) (iii) (iv) (i). Show Answer Correct Answer: D) (ii) (iii) (iv) (i). 59. The innermost layer of microsporangium is A) Tapetum. B) Epidermis. C) Endothecium. D) Middle layer. Show Answer Correct Answer: A) Tapetum. 60. Sexual reproduction is characterized by fusion of the male and female gametes (fertilization), the formation of ..... and ..... A) Embryogenesis and zygote. B) Zygote and embryogenesis. C) Fruit and seed. D) A. seed and embryo. Show Answer Correct Answer: B) Zygote and embryogenesis. ← 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 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 8Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books