This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Biology > Class 12 Biology Chapter 1 Reproduction In Organisms – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Assertion (A):Organisms show three phases in their life cycle. Reason (R):Juvenile phase is a degenerative phase. A) A is correct R but is incorrect. B) Both A and R are correct. C) R is the correct explanation for A. D) A is not correct but R is correct. Show Answer Correct Answer: A) A is correct R but is incorrect. 2. Egganswer choices A) Male sex cell. B) Stem cell. C) Female sex cell. D) Body cell. Show Answer Correct Answer: C) Female sex cell. 3. Pistia reproduces by which method A) Offset. B) Buds. C) Suckers. D) Runners. Show Answer Correct Answer: A) Offset. 4. LIFE SPAN OF AN ORGANISM IS DETERMINED BY A) SIZE OF THE ORGANISM. B) SHAPE OF THE ORGANISM. C) BOTH OF THE ABOVE. D) NONE OF THE ABOVE. Show Answer Correct Answer: D) NONE OF THE ABOVE. 5. What are pairs of chromosomes-one inherited from each parent-that have genes for the same traits arranged in the same order called? A) Chromosomes. B) Homologous chromosomes. C) Diploid chromosomes. D) None of the above. Show Answer Correct Answer: B) Homologous chromosomes. 6. Which gamete has head and tail? A) Male. B) Female. C) Both male and female. D) None of these. Show Answer Correct Answer: A) Male. 7. What type of asexual reproduction wherein it occurs when an offspring grows from a piece of its parent?answer choices A) Fission. B) Vegetative reproduction. C) Regeneration. D) Budding. Show Answer Correct Answer: C) Regeneration. 8. Clone is the product of- A) Asexual reproduction. B) Sexual or asexual reproduction. C) Amphimixis. D) Sexual reproduction. Show Answer Correct Answer: A) Asexual reproduction. 9. Two parents are carriers for sickle cell anemia. Sickle cell anemia is a recessive trait. If both parents are carriers but do not express the trait, what is the probability that their offspring will express sickle cell anemia? (MS-LS3-2) A) 0%. B) 25%. C) 50%. D) 75%. Show Answer Correct Answer: B) 25%. 10. In majority of the plants, fertilization is A) External. B) Internal and oogamous. C) Isogamous. D) External and oogamous. Show Answer Correct Answer: B) Internal and oogamous. 11. Which of the following has the longest life span? A) Tortoise. B) Banyan tree. C) Parrot. D) Elephant. Show Answer Correct Answer: B) Banyan tree. 12. Vegetative propagules of bryophyllum A) Rhizome. B) Bulbil. C) Offsets. D) Leaf buds. Show Answer Correct Answer: D) Leaf buds. 13. How many chromosomes are there in the meiocyte of Apple? A) 17. B) 10. C) 34. D) 20. Show Answer Correct Answer: C) 34. 14. A planarian is cut into 3 equal parts. How many planarians will there be by fragmentation/regeneration?answer choices A) 5. B) 3. C) 10. D) 6. Show Answer Correct Answer: B) 3. 15. The asexual, motile spores produced by Chlamydomonas are called A) Gemmules. B) Conidia. C) Zoospores. D) Ascospores. Show Answer Correct Answer: C) Zoospores. 16. Which of the following is not ensured by reproduction? A) Inheritance of Characteristics. B) Ability to skip rope or play drums. C) Continuity of Species. D) Creation of Genetic Variation. Show Answer Correct Answer: B) Ability to skip rope or play drums. 17. Parthenogenesis is not found in: A) Turkey. B) Honey bee. C) Housefly. D) Rotifers. Show Answer Correct Answer: C) Housefly. 18. ALL ORGANISMS HAVE TO REACH CERTAIN STAGES, THEY ARE A) JUVENILE, REPRODUCTIVE AND SENESCENT PHASE. B) REPRODUCTIVE, GROWTH AND MATURITY PHASE. C) CHILDHOOD, BOYHOOD AND ADULTHOOD. D) NONE OF THESE ABOVE. Show Answer Correct Answer: A) JUVENILE, REPRODUCTIVE AND SENESCENT PHASE. 19. Layering is used in vegetative propagation of A) Mango. B) Jasmine. C) Pomology. D) Rose. Show Answer Correct Answer: B) Jasmine. 20. FOLLOWING ARE THE EXAMPLES OF DIOECIOUS PLANTS A) CUCURBITS AND COCONUTS. B) PAPAYA AND DATE PALM. C) CHINAROSE AND BRINJAL. D) NONE OF THE ABOVE. Show Answer Correct Answer: B) PAPAYA AND DATE PALM. 21. Mammals, reptiles, and birds undergo this type of fertilization. A) Internal Fertilization. B) External Fertilization. C) All the above. D) None of the above. Show Answer Correct Answer: A) Internal Fertilization. 22. No individual is immortal except- A) Drones. B) Sponges. C) Green plants. D) Single celled organisms. Show Answer Correct Answer: D) Single celled organisms. 23. All are monoecious except A) Pinus. B) Date palm. C) Coconut. D) Cucurbits. Show Answer Correct Answer: B) Date palm. 24. In which of the following organisms internal bud formation is seen? A) Spongilla, Sycon. B) Amoeba, Paramecium. C) Amoeba, Plasmodium. D) Planaria, Hydra. Show Answer Correct Answer: A) Spongilla, Sycon. 25. The fusion of male and female gametes in course of fertilization is called A) Merogamy. B) Syngamy. C) Isogamy. D) Hologamy. Show Answer Correct Answer: B) Syngamy. 26. . In which development of zygote takes place in female is called as ..... A) Oviparous. B) Viviparous. C) Ovoviviparous. D) None. Show Answer Correct Answer: B) Viviparous. 27. Vegetative reproduction is categorized as asexual reproduction because A) SINGLE PARENT IS INVOLVED. B) OFFSPRINGS PRODUCED ARE CLONES. C) NEW INDIVIDUALS ARE MORPHOLOGICALLY AND GENETICALLY SIMILAR. D) ALL OF THE ABOVE. Show Answer Correct Answer: D) ALL OF THE ABOVE. 28. Many unicellular eukaryotes reproduce by this method. A) Vegetative reproduction. B) Budding. C) Regeneration. D) Mitotic cell division. E) Fission. Show Answer Correct Answer: D) Mitotic cell division. 29. A. The plant was introduced in India because of its beautiful flowers and shape of leavesB. It can propagate vegetatively at a phenomenal rate and spread all over water body in a short periodC. It is very difficult to get rid off these plantsA to C points are related to- A) Water hyacinth. B) Dahlia. C) Azolla (water fern). D) Mosses. Show Answer Correct Answer: A) Water hyacinth. 30. Which of the following is an example of monoecious plant. A) Papaya. B) Coconut. C) Date palm. D) None of the above. Show Answer Correct Answer: B) Coconut. 31. Most critical event in sexual reproduction is A) Gamete transfer. B) Fertilisation. C) Post fertilisation. D) Gametogenesis. Show Answer Correct Answer: B) Fertilisation. 32. What type of reproduction involves only one organism and results in genetically identical offspring? A) Binary fission. B) Sexual reproduction. C) Meiosis. D) Budding. Show Answer Correct Answer: D) Budding. 33. Parthenogenesis is A) Development of fruits without hormones. B) Development of embryo from egg without fertilization. C) Development of embryo without fertilization. D) Development of fruit without fertilization. Show Answer Correct Answer: B) Development of embryo from egg without fertilization. 34. What is the process of reproduction in Hydra where a bud develops as an outgrowth due to repeated cell division at one specific site? A) Spore Formation. B) Fission. C) Regeneration. D) Budding. Show Answer Correct Answer: D) Budding. 35. Vegetative propagation occurs in mint by A) Sucker. B) Runner. C) Offset. D) Rhizome. Show Answer Correct Answer: A) Sucker. 36. Which plant part is involved in reproduction by grafting? A) Flower. B) Leaf. C) Stem. D) Root. Show Answer Correct Answer: C) Stem. 37. What are the advantages of sexual reproduction? A) Increased risk of genetic diseases. B) Inability to adapt to changing environments. C) Limited genetic diversity. D) The advantages of sexual reproduction include genetic diversity, adaptation to changing environments, and the ability to remove harmful mutations from the gene pool. Show Answer Correct Answer: D) The advantages of sexual reproduction include genetic diversity, adaptation to changing environments, and the ability to remove harmful mutations from the gene pool. 38. Cell division in prokaryotes that forms two genetically identical cells. A) Cloning. B) Budding. C) Fission. D) Vegetative reproduction. E) Regeneration. Show Answer Correct Answer: C) Fission. 39. ..... is an essential feature of sexual cycle. A) Mitosis. B) Meiosis. C) Both mitosis and meiosis. D) None of the above. Show Answer Correct Answer: B) Meiosis. 40. Exogenous budding is seen in A) Euglena. B) Noctiluca. C) Hydra. D) Tapeworm. Show Answer Correct Answer: C) Hydra. 41. Arrhenotoky is related to A) Parthenogenesis. B) Wax formation. C) Both A and B. D) None of these. Show Answer Correct Answer: A) Parthenogenesis. 42. Which is not a method of vegetative propagation? A) Cutting. B) Grafting. C) Layering. D) Budding. Show Answer Correct Answer: B) Grafting. 43. Which of the following is a post-fertilization event in flowering plants? A) Formation of pollen grains. B) Transfer of pollen grains. C) Embryo development. D) Formation of flower. Show Answer Correct Answer: C) Embryo development. 44. All Offspring of Asexual reproduction are identical A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 45. Which statement describes why genetic variation is beneficial to populations of organisms? A) Individuals look different from one another. B) Species can better survive environmental changes. C) Only one parent is needed to produce offspring. D) Populations of the organism increase more rapidly. Show Answer Correct Answer: B) Species can better survive environmental changes. 46. Cloning results in two organisms that are A) Both adult mammals. B) Produced from cuttings. C) Genetically similar. D) Genetically identical. Show Answer Correct Answer: D) Genetically identical. 47. This is the phase of meiosis in which two daughter cells form. A) Anaphase I. B) Telophase I. C) Metaphase I. D) Prophase I. Show Answer Correct Answer: B) Telophase I. 48. What determines the sex of a baby? A) The mother's chromosomes. B) The father's blood group. C) The mother's blood group. D) The father's chromosomes. Show Answer Correct Answer: D) The father's chromosomes. 49. How does the pollen reach the female germ-cells in a flower? A) Through the style. B) Through the petals. C) Through the stigma. D) Through the ovary. Show Answer Correct Answer: A) Through the style. 50. Monkeys and Apes show ..... cycle and are ..... breeders. A) Menstrual; Seasonal. B) Menstrual; Continuous. C) Oestrous; Continuous. D) Oestrous; Seasonal. Show Answer Correct Answer: B) Menstrual; Continuous. 51. What is the role of meiosis in sexual reproduction? A) None of the above. B) Creating genetic variation. C) Reducing the chromosome number. D) Doubling the chromosome number. Show Answer Correct Answer: C) Reducing the chromosome number. 52. Which is a bisexual flower? A) Watermelon. B) Corn. C) Papaya. D) Mustard. Show Answer Correct Answer: D) Mustard. 53. What is formed when an egg cell and sperm cell are joined together? A) Haploid cell. B) Zygote. C) Sister cell. D) Diploid cell. Show Answer Correct Answer: B) Zygote. 54. Which of the following is not a hermaphrodite? A) Sponge. B) Ascaris. C) Leech. D) Earthworm. Show Answer Correct Answer: B) Ascaris. 55. This word means that a cell contains two complete sets of chromosomes like found in normal body cells (1 from each parent) A) Haploid. B) Embregglio. C) Diploid. D) Zypher. Show Answer Correct Answer: C) Diploid. 56. Which sex chromosomes are present in all mature human sperm cells? A) Both X and Y chromosomes. B) Either X or Y chromosomes. C) Only X chromosomes. D) Only Y chromosomes. Show Answer Correct Answer: B) Either X or Y chromosomes. 57. In earthworms self fertilisation does not occur because A) Hypogyny. B) Epigyny. C) Protogyny. D) Protandry. Show Answer Correct Answer: D) Protandry. 58. Binary fission is found in A) Amoeba. B) Paramecium. C) Planaria. D) All of these. Show Answer Correct Answer: D) All of these. 59. What is the mode of reproduction in amoeba? A) Binary fission. B) Binary fission and multiple fission. C) Binary fission and conjugation. D) Multiple fission only. Show Answer Correct Answer: B) Binary fission and multiple fission. 60. GAMETES ARE FORMED DURING A) PRE-FERTILIZATION. B) FERTILIZATION. C) POST-FERTILIZATION. D) ALL OF THE ABOVE. Show Answer Correct Answer: A) PRE-FERTILIZATION. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Biology Chapter 1 Reproduction In Organisms Quiz 1Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 3Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 4Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 5Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 6Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 7Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 8Class 12 Biology Chapter 1 Reproduction In Organisms Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books