This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In which of the following the endosperm persists in the mature seed? A) Pea. B) Beans. C) Castor. D) Groundnut. Show Answer Correct Answer: C) Castor. 2. The process of formation of seeds without fertilisation in flowering plants is known as: A) Budding. B) Apomixis. C) Sporulation. D) Somatic hybridization. Show Answer Correct Answer: B) Apomixis. 3. What is the primary purpose of a flower? A) To produce nectar. B) To make seeds for reproduction. C) To scatter seeds. D) To produce fruit. Show Answer Correct Answer: B) To make seeds for reproduction. 4. Embryo develops from A) Egg cell. B) Zygote. C) Egg apparatus. D) Synergids. Show Answer Correct Answer: B) Zygote. 5. Assertion:Polyembryony is found in all angiosperm. Reason:All angiosperm are produced by apomixis A) A. B) B. C) C. D) D. Show Answer Correct Answer: D) D. 6. What is the function of the filiform apparatus? A) Guide the entry of pollen tube. B) Recognize the suitable pollen at the stigma. C) Produce nectar. D) Stimulate division of the generative cell. Show Answer Correct Answer: A) Guide the entry of pollen tube. 7. Flowers are considered as objects of A) Aesthetic value. B) Ornamental value. C) Religious and cultural value. D) All of these. Show Answer Correct Answer: D) All of these. 8. The female gametophyte of a typical dicot at the time offertilisation is A) 8-celled. B) 7-celled. C) 6-celled. D) 5-celled. Show Answer Correct Answer: B) 7-celled. 9. An embryo may sometimes develop from any cell of embryo sac other than egg. It is termed as A) Apospory. B) Apogamy. C) Parthenogenesis. D) Parthenocarpy. Show Answer Correct Answer: B) Apogamy. 10. Attractans and rewards are required for A) Entomophily. B) Hydrophily. C) Anemophily. D) Cleistogamy. Show Answer Correct Answer: A) Entomophily. 11. How many Pollen grains will be formed after meiotic division in 10 microspore mother cells A) 10. B) 40. C) 20. D) 80. Show Answer Correct Answer: B) 40. 12. What is sporophyte generation? A) Haploid generation. B) Diploid generation. C) All the above. D) None of the above. Show Answer Correct Answer: B) Diploid generation. 13. The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilization is called- A) Parthenocarpy. B) Apomixis. C) Vegetative propagation. D) Sexual reproduction. Show Answer Correct Answer: C) Vegetative propagation. 14. While planning for an artificial hybridisation programme involving dioecious plants, which of the following steps would not be relevant? A) Bagging of female flower. B) Dusting of pollen on stigma. C) Emasculation. D) Collection of pollen. Show Answer Correct Answer: C) Emasculation. 15. What does double fertilization refer to in flowering plants? A) One sperm fertilized with egg to form diploid zygote while the other one sperm fertilized with 2 polar nuclei to form triploid endosperm. B) Two eggs and one sperm fertilized together. C) One sperm fertilized with egg and one male gamete fertilized with egg nucleus. D) Two sperm fertilized with one egg. Show Answer Correct Answer: A) One sperm fertilized with egg to form diploid zygote while the other one sperm fertilized with 2 polar nuclei to form triploid endosperm. 16. Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in A) Papaya. B) Bottle gourd. C) Maize. D) All of these. Show Answer Correct Answer: A) Papaya. 17. In majority of angiosperms A) Egg has a filiform apparatus. B) There are numerous antipodal cells. C) Reduction division occurs in the megaspore mother cells. D) A small central cell is present in the embryo sac. Show Answer Correct Answer: C) Reduction division occurs in the megaspore mother cells. 18. Insect-pollinated flowers have scented fragrance. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. Section D-One-word answers (convert to MCQ):Select the correct one-word term for the agent of insect pollination. A) Nectar. B) Stigma. C) Anther. D) Pollen tube. Show Answer Correct Answer: A) Nectar. 20. Pollination in flowering plants A) Asexual reproduction. B) Sexual reproduction. C) All the above. D) None of the above. Show Answer Correct Answer: B) Sexual reproduction. 21. Point out the odd one A) Pollen grain. B) Nucellus. C) Micropyle. D) Embryo sac. Show Answer Correct Answer: A) Pollen grain. 22. After fertilization, polar nucleus in the embryo sac (with Second male gamete) transformed into A) Zygote. B) Endosperm. C) Embryo. D) Young Sapling. Show Answer Correct Answer: B) Endosperm. 23. Transfer of pollen grains from anther to the stigma of a different plant is known as A) Geitonogamy. B) Autogamy. C) Xenogamy. D) Self-pollination. Show Answer Correct Answer: C) Xenogamy. 24. Type of pollination that produces the greatest variation in characteristics A) Cross-pollination. B) Self-pollination. C) All the above. D) None of the above. Show Answer Correct Answer: A) Cross-pollination. 25. Which of these statements about seed dormancy are TRUE?1. Seeds do not respire during dormancy2. Seeds lose a lot of water before dormancy3. Seeds have low metabolic rate during dormancy.4. Seeds have no metabolic activity during dormancy. A) Only 1 and 3. B) Only 2 and 3. C) Only 1 and 4. D) Only 1, 2 and 3. Show Answer Correct Answer: B) Only 2 and 3. 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