Class 12 Biology Mock Test: Sexual Reproduction in Flowering Plants Class 12 Biology Mock Test: Sexual Reproduction in Flowering Plants 1. Which part of the flower develops into a seed after fertilization? Ovary Ovule Stigma Style 2. What is the function of the pollen tube? To produce pollen grains To carry the male gamete to the ovule To attract pollinators To protect the ovule 3. Which of the following is NOT a part of the female reproductive structure of a flower? Stigma Style Anther Ovary 4. What is the process of transfer of pollen grains from the anther to the stigma called? Fertilization Pollination Germination Embryogenesis 5. Which of the following is a characteristic of wind-pollinated flowers? Brightly colored petals Large and sticky pollen grains Small and light pollen grains Strong fragrance 6. What is the male gametophyte in flowering plants? Pollen grain Embryo sac Ovule Zygote 7. Which of the following is a type of self-pollination? Autogamy Geitonogamy Xenogamy All of the above 8. What is the ploidy of the endosperm in flowering plants? Haploid Diploid Triploid Tetraploid 9. Which of the following is a function of the endosperm? Protection of the embryo Storage of nutrients Formation of the seed coat Attraction of pollinators 10. What is the main function of the stigma in a flower? To produce pollen To receive pollen grains To protect the ovule To attract insects 11. Which of the following is a characteristic of insect-pollinated flowers? Small and inconspicuous flowers Large and brightly colored flowers Light and non-sticky pollen Absence of nectar 12. What is the role of the synergids in the embryo sac? To produce the egg cell To guide the pollen tube To store nutrients To form the seed coat 13. Which of the following is a type of asexual reproduction in plants? Binary fission Budding Fragmentation All of the above 14. What is the ploidy of the zygote in flowering plants? Haploid Diploid Triploid Tetraploid 15. Which of the following is a part of the male reproductive structure of a flower? Stigma Style Anther Ovary 16. What is the function of the nucellus in the ovule? To produce the egg cell To store nutrients To protect the embryo sac To attract pollinators 17. Which of the following is a type of cross-pollination? Autogamy Geitonogamy Xenogamy None of the above 18. What is the role of the antipodal cells in the embryo sac? To produce the egg cell To guide the pollen tube To store nutrients To form the seed coat 19. Which of the following is a characteristic of water-pollinated flowers? Brightly colored petals Large and sticky pollen grains Small and light pollen grains Absence of nectar 20. What is the function of the integuments in the ovule? To produce the egg cell To store nutrients To form the seed coat To attract pollinators Submit Answers
