This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Number of seeds are equal to the A) Number of ovules. B) Number of ovaries. C) Both (a) and (b). D) None of these. Show Answer Correct Answer: A) Number of ovules. 2. In a fully developed male gametophyte the number of nuclei is A) One. B) Five. C) Three. D) Four. Show Answer Correct Answer: C) Three. 3. Select the correct statement(s) regarding the structure of a mature embryo sac. (i) Egg apparatus is situated towards chalazal end. (ii) Antipodal cells are situated towards micropylar end. (iii) A typical angiospermic embryo sac is 7-celled, 8-nucleate at maturity. A) (i) only. B) (ii) only. C) (iii) only. D) (i), (ii) and (iii). Show Answer Correct Answer: C) (iii) only. 4. Pollen grains lose viability within 30 minutes of their release in A) Rose. B) Potato. C) Wheat. D) Pea. Show Answer Correct Answer: C) Wheat. 5. Insect-pollinated flowers usually produce nectar. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. Which of the following is the correct sequence of events of sexual reproduction A) Pollination, fertilization, seedling, embryo. B) Seedling, embryo, fertilization, pollination. C) Pollination, fertilization, embryo, seedling. D) Embryo, seedling, pollination, fertilization. Show Answer Correct Answer: C) Pollination, fertilization, embryo, seedling. 7. Megasporogenesis is A) Formation of fruits. B) Formation of seeds. C) Formation of megaspores. D) Both (b) and (c). Show Answer Correct Answer: C) Formation of megaspores. 8. Which of the following is not an advantage of Self-pollination? A) Assured pollination. B) Plants need not produce large number of pollen grains. C) New traits are easily introduced. D) Produces homozygous progeny. Show Answer Correct Answer: C) New traits are easily introduced. 9. In flowering plants, the generative cell of pollen grain divides mitotically to give rise to the A) 2 male gametes. B) 3 male gametes. C) 1 male gamete. D) 4 male gametes. Show Answer Correct Answer: A) 2 male gametes. 10. Function of synergids is to: A) Fuse with extra male gametes and form endosperm. B) Protect egg from pathogens. C) Produce additional embryo. D) Attract pollen tube and bear its shock. Show Answer Correct Answer: D) Attract pollen tube and bear its shock. 11. What is the function of filiform apparatus at the entrance into ovule? A) Brings about opening of the pollen tube. B) Guides pollen tube from synergids to egg. C) Helps in the entry of the pollen tube into a synergids. D) Prevents entry of more than one pollen tube into a synergids. Show Answer Correct Answer: C) Helps in the entry of the pollen tube into a synergids. 12. What is the function of the stigma in a flower? A) Collect pollen grains. B) Produce male gametes. C) Protect the flower bud. D) Produce sugary nectar. Show Answer Correct Answer: A) Collect pollen grains. 13. The part of the plant that collects sunlight A) Leaves. B) Stem. C) Petals. D) Ovary. Show Answer Correct Answer: A) Leaves. 14. Which of the following structures facilitate the entry of oxygen and water into the seed during germination? A) Perisperm. B) Funicle. C) Micropyle. D) Seed coat. Show Answer Correct Answer: C) Micropyle. 15. Read the given statements and select the correct option. Statement 1 Pollination by bats is known as chiropterophily.Statement 2 Pollination by ants is known as ornithophily. A) Both statements 1 and 2 are correct. B) Statement 1 is correct but statement 2 is incorrect. C) Statement 1 is incorrect but statement 2 is correct. D) Both statements 1 and 2 are incorrect. Show Answer Correct Answer: B) Statement 1 is correct but statement 2 is incorrect. 16. In a breeding experiment, the selected male parent is diploid and the female parent is tetraploid. What will be the ploidy level of the endosperm that will develop after double fertilisation? A) Diploid. B) Triploid. C) Tetraploid. D) Pentaploid. Show Answer Correct Answer: D) Pentaploid. 17. Cross-pollination is preferred over self pollination because A) The new varieties are formed. B) It results in better offsprings. C) It is easy. D) Parthenogenesis can be induced. Show Answer Correct Answer: B) It results in better offsprings. 18. The long stalk-like part that supports the stigma. A) Filament. B) Anther. C) Stigma. D) Style. Show Answer Correct Answer: D) Style. 19. In which one of the following, the male and female gametophytes don't have free-living independent existence? A) Pteris. B) Funaria. C) Polytrichum. D) Marchantia. Show Answer Correct Answer: A) Pteris. 20. In chasmogamy pollination takes place in A) Open flower. B) Closed flower. C) Large flower. D) Geitonogamy flower. Show Answer Correct Answer: A) Open flower. 21. Which of the follwing is matched incorrectly?A) Polyspory-CuscutaB) Monospoirangiate-OrchidC) Compound pollen grains-TyphaD) Pollinium-Calotropis A) A. B) B. C) C. D) D. Show Answer Correct Answer: B) B. 22. 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) 10. C) 20. D) 40. Show Answer Correct Answer: B) 10. 23. While planning for an artificial hybridization programme involving dioecious plants, which of the following 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. 24. 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) Absorption. B) Asexual reproduction. C) Fertilization. D) Gamete. Show Answer Correct Answer: D) Gamete. 25. What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids? A) 16. B) 24. C) 32. D) 8. Show Answer Correct Answer: B) 24. ← PreviousNext →Related 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 9Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 10Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books