This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. There are 20 chromosomes in each leaf cell of a maize plant. What is the number of chromosomes in the male nucleus of a pollen grain of maize? A) 5. B) 20. C) 40. D) 10. Show Answer Correct Answer: D) 10. 2. A mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote. A) Asexual reproduction. B) Absorption. C) Gamete. D) Fertilization. Show Answer Correct Answer: C) Gamete. 3. In angiosperms, double fertilization involves: A) Syngamy and triple fusion. B) Syngamy and autogamy. C) Triple fusion and apogamy. D) None of these. Show Answer Correct Answer: A) Syngamy and triple fusion. 4. After fertilization the ovule will ..... A) Be blown away by the wind. B) Be carried away by a pollinator. C) Will grow into a new plant. D) Develop into a fruit that contains seeds. Show Answer Correct Answer: D) Develop into a fruit that contains seeds. 5. Which of the following is not an outbreeding device A) Asynchronicity in pollen release and stigma receptivity. B) Self incompatibility. C) Stamen and stigma present in different positions. D) Production of Bi-sexual flowers. Show Answer Correct Answer: D) Production of Bi-sexual flowers. 6. Why flowering plants are more successful than other members of the plant world? A) They carry out variety of pollination mechanism. B) They are large and have a good vascular tissue system. C) The protected plant embryo can survive in the period of unfavorable conditions. D) All of these. Show Answer Correct Answer: D) All of these. 7. Antipodals are located at: A) Lateral end. B) Micropylar end. C) Chalazal end. D) Central cells. Show Answer Correct Answer: C) Chalazal end. 8. What is the organ of sexual reproduction in a plant? A) Leaves. B) Flower. C) Stem. D) None of the above. Show Answer Correct Answer: B) Flower. 9. Select the correct option w.r.t tapetum: A) Nutritive tissue. B) Contains only one nuclei. C) Helps in dehiscence of anther. D) External layer of microsporangium. Show Answer Correct Answer: A) Nutritive tissue. 10. Apomixis is the process by which A) Seeds are produced without fertilization. B) Seeds are produced after fertilization. C) Fruits are produced after pollination. D) Fruits are produced after fertilization. Show Answer Correct Answer: A) Seeds are produced without fertilization. 11. Inside the microsporangium, there is a diploid cell known as, A) Generative cell. B) Microsporocyte. C) Megasporangium. D) Microspore. Show Answer Correct Answer: B) Microsporocyte. 12. Which one has the biggest seed? A) Mango. B) Apple. C) Avocado. D) Banana. Show Answer Correct Answer: A) Mango. 13. The most common type of endosperm in angiosperms is A) Helobial endosperm. B) Cellular endosperm. C) Mosaic endosperm. D) Nuclear endosperm. Show Answer Correct Answer: D) Nuclear endosperm. 14. Centre of each microsporangium is occupied by A) Tapetum. B) Microspore mother cell. C) Sporogenous tissue. D) Central tissue. Show Answer Correct Answer: C) Sporogenous tissue. 15. The development of fruits without fertilisation of the ovary, is called: A) Apomixis. B) Agamospermy. C) Parthenocarpy. D) Parthenogenesis. Show Answer Correct Answer: C) Parthenocarpy. 16. The flowers pollinated by flies and beetles A) Have feathery pollens. B) Have long ribbon shaped pollens. C) Possess exposed stigma. D) Secrete foul odours to attract these animals. Show Answer Correct Answer: D) Secrete foul odours to attract these animals. 17. Mature male gametophyte is A) 1-celled. B) 2-celled. C) 1-celled and 2-nucleate. D) 3-celled. Show Answer Correct Answer: D) 3-celled. 18. The female structures of the flower A) Stamen. B) Pistil. C) Ovary. D) Stigma. Show Answer Correct Answer: B) Pistil. 19. Asexual reproduction produces a plant that is exactly similar to the plant which it came from A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. Which of the given statements are correct with respect to pollination in vallisneria?1. Pollen grains are light and non-sticky.2.Female flowers reach the surface of water by long stalks.3.Pollen grains are carried passively by water currents.4. Female flowers remain submerged in water. A) 1 and 2. B) 2 and 4. C) 1 and 4. D) 2 and 3. Show Answer Correct Answer: D) 2 and 3. 21. The ovule is stalked and attached to placenta by means of A) Chalaza. B) Hilum. C) Micropyle. D) Funicle. Show Answer Correct Answer: D) Funicle. 22. Free nuclear division in an angiosperm takes place during A) Gamete formation. B) Endosperm formation. C) Embryo formation. D) Flower formation. Show Answer Correct Answer: B) Endosperm formation. 23. Seeds of which plant were discovered during the archeological excavation at King Herod's palace near the Dea Sea? A) Phoenix. B) Agave. C) Lupinus. D) Rose. Show Answer Correct Answer: A) Phoenix. 24. Male gametes enters the ovary through the ..... A) Tube. B) Pollen tube. C) Fallopien tube. D) None of the above. Show Answer Correct Answer: B) Pollen tube. 25. Ovule is ategmic in A) Helianthus. B) Santalum. C) Pea. D) Brassica. Show Answer Correct Answer: B) Santalum. 26. Which of the following is correct about Parthenium (Carrot grass)? A) Parthenium came into India as a contaminant with imported wheat. B) It has become ubiquitous in occurence. C) It causes pollen allergy. D) All of the above. Show Answer Correct Answer: D) All of the above. 27. The ploidy of generative cell in a pollen grain is A) Diploid. B) Triploid. C) Tetraploid. D) Haploid. Show Answer Correct Answer: D) Haploid. 28. Pollen grains are shed at 2-celled stage in A) 60% angiosperms. B) 20% angiosperms. C) 40% angiosperms. D) 80% angiosperms. Show Answer Correct Answer: A) 60% angiosperms. 29. The function of a flower is to produce ..... and to ensure that fertilization will take place. A) Haploid zygote. B) Diploid gametes. C) Haploid gametes. D) Diploid egg. Show Answer Correct Answer: C) Haploid gametes. 30. Which of the following is the correct composition of EGG APPARATUS? A) Egg and Polar nuclei. B) Egg and antipodals. C) Egg and Synergids. D) Egg, Synergids and Polar nuclei. Show Answer Correct Answer: C) Egg and Synergids. 31. Radicle give rise to A) Leaf. B) Branch. C) Root. D) Stem. Show Answer Correct Answer: C) Root. 32. Nemec phenonmenon is not observed in A) Ornithogalum. B) Hyacinthus. C) Portulaca. D) Leptomaria. Show Answer Correct Answer: C) Portulaca. 33. What is the function of endosperm? A) It supplies the nuclei necessary for double fertilization. B) It stores food for developing embryo in angiosperms. C) It provides nutrients for developing flowers. D) It is a source of nutrition for developing cones in gymnosperms. Show Answer Correct Answer: B) It stores food for developing embryo in angiosperms. 34. During porogamy the pollen tube enters into the ovule through the A) Micropylar end. B) Chalaza. C) Funicle. D) Integument. Show Answer Correct Answer: A) Micropylar end. 35. Which of the following structures are haploid in nature? A) Nucellus and antipodals. B) Microspores mother cell and antipodals. C) Egg cell and antipodals. D) Egg and central cell. Show Answer Correct Answer: C) Egg cell and antipodals. 36. After fertilization, there is a change in the floral parts. Find the incorrect change. Exceptions may not be considered. A) Ovule to fruit. B) Outer integument to testa. C) Egg to Zygote to Embryo. D) Central cell to Endosperm. Show Answer Correct Answer: A) Ovule to fruit. 37. Pollination in water lily is brought about by the agency of A) Birds. B) Bats. C) Water. D) Wind or insect. Show Answer Correct Answer: D) Wind or insect. 38. What is the function of germ pore? A) Emergence of radicle. B) Absorption of water for seed germination. C) Initiation of pollen tube. D) All the above. Show Answer Correct Answer: D) All the above. 39. What type of seeds are found in wheat, maize and barley? A) Non-albuminous. B) Albuminous. C) Albuminous seeds are found in wheat, whereas maize and barley have non-albuminous seeds. D) Barley and maize have albuminous seeds, whereas whaet has non-albuminous seeds. Show Answer Correct Answer: B) Albuminous. 40. How many microspore mother cell are required to produce 1000 microspores/pollen grains? A) 250. B) 150. C) 200. D) 100. Show Answer Correct Answer: A) 250. 41. Mass of cells enclosed with in the integuments are called A) Nucleus. B) Nucellus. C) Tapetum. D) Embryo. Show Answer Correct Answer: B) Nucellus. 42. Match column I with column II and select the correct optionfrom the given codes. Column I Column II A. Tallest flower (i) MaizeB. Pronuba moth (ii) Amorphophallus C. Anemophily (iii) Salvia D. Entomophily (iv) Yucca A) A-(iii), B-(ii), C-(i), D-(iv). B) A-(ii), B-(iv), C-(iii), D-(i). C) A-(iv), B-(i11), C-(ii), D-(i). D) A-(ii), B-(iv), C-(i), D-(iii). Show Answer Correct Answer: D) A-(ii), B-(iv), C-(i), D-(iii). 43. The number of ovules are many in the ovary of ..... A) Paddy. B) Mango. C) Orchids. D) Wheat. Show Answer Correct Answer: C) Orchids. 44. To form four fully developed polygonum type of embryo sacs in angiosperms total number of meiosis and mitosis divisions generations required are A) 4, 12. B) 4, 4. C) 1, 12. D) 1, 3. Show Answer Correct Answer: A) 4, 12. 45. What is the significance of fruit formation? A) To promote root growth. B) To protect seeds and aid in dispersal. C) To enhance photosynthesis. D) To attract pollinators. Show Answer Correct Answer: B) To protect seeds and aid in dispersal. 46. Vegetative/Asexual reproduction and apomixis are common to each other in A) Type of cell division. B) Clone nature of offspring. C) Both (a) and (b). D) Only in dicot plant. Show Answer Correct Answer: C) Both (a) and (b). 47. What is the female part of the plant called? A) Carpel. B) Style. C) Stamen. D) Stigma. Show Answer Correct Answer: A) Carpel. 48. All the individuals produced through asexual reproduction from a parent is called? A) Tissue. B) Trait. C) Gamete. D) Clone. Show Answer Correct Answer: D) Clone. 49. Male gametes in angiosperms are formed inside: A) Stigma. B) Ovule. C) Pollen tube. D) Anther sac. Show Answer Correct Answer: C) Pollen tube. 50. The male organ of a flower has two parts. What are they? A) Stigma and ovary. B) Stamen, and anther. C) Stamen and filament. D) Anther and filament. Show Answer Correct Answer: D) Anther and filament. 51. Ploidy of endothecium, microspore mother cell, tapetum and microspore is respectively: A) N, n, n, 2n. B) 2n, n, 2n, n. C) N, 2n, 2n, n. D) 2n, 2n, 2n, n. Show Answer Correct Answer: D) 2n, 2n, 2n, n. 52. Coleoptile protects A) Hypocotyl. B) Radicle. C) Epicotyl. D) Plumule. Show Answer Correct Answer: D) Plumule. 53. Which structure is responsible for attracting pollinators A) Sigma. B) Anther. C) Petals. D) Ovary. Show Answer Correct Answer: C) Petals. 54. Which agent is most commonly used by grasses? A) Birds. B) Biotic agents. C) Water. D) Wind. Show Answer Correct Answer: D) Wind. 55. In ..... endosperm is a special tissue which is formed as a result of vegetative fertilization A) Gymnosperm. B) Parenchyma. C) Angiosperm. D) Dichosperms. Show Answer Correct Answer: C) Angiosperm. 56. Offspring have a combination of DNA from the parents A) Asexual reproduction. B) Sexual reproduction. C) All the above. D) None of the above. Show Answer Correct Answer: B) Sexual reproduction. 57. Pseudocopulation mechanism of pollination occurs in: A) Ophrys. B) Ficus. C) Mango. D) Maize. Show Answer Correct Answer: A) Ophrys. 58. A typical anther is bilobed, dithecous with four microsponagia however in members of ..... anther is monothecous and bisporangiate. A) Malvaceae. B) Brassicaceae. C) Fabaceae. D) Solanaceae. Show Answer Correct Answer: A) Malvaceae. 59. Cross-pollination has the advantage of A) Genetic recombination. B) Crossing over. C) Mutation. D) Polyploidy formation. Show Answer Correct Answer: A) Genetic recombination. 60. In over 60 per cent of angiosperms, pollen grains are shed at the ..... stage. A) 4-celled. B) 3-celled. C) Single cell. D) 2-celled. Show Answer Correct Answer: D) 2-celled. ← 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 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