biology class 12 chapter 2 mcqs

Why do com cobs have long tassels? Mention how it has happened. 17. 62. Answer: Explaination: (a) Proembryo (b) Heart-shaped embryo, 74. – It stores food materials, which are used by the embryo during seed germination. (b) between different flowers of the same plant. (c) plant is monoecious. ... Grade 11 is the first year of a student in a college while Grade 12 is the second and final year. We have provided Biological Classification Class 11 Biology MCQs … – The pollen grains are light and non- sticky/dry. (d) somatic hybridization, Question 3. (c) Cleistogamous flowers exhibit both autogamy and geitonogamy. (c) both pollen and ovules mature simultaneously. Students who can Practice CBSE Class 12 Biology … (a) Parthenogenesis Answer: Explaination: The long tassels of com cob are the styles and stigmas; they are meant to easily trap the air-bome pollen grains. If you have any query regarding CBSE Class 12 Biology Sexual Reproduction in Flowering Plants MCQs Pdf, drop a comment below and we will get back to you at the earliest. The outermost layer of endosperm in a maize grain is known as ______ . AbilobeddithecousantherhaslOOmicrospore mother cells per microsporangium. (d) Robert Hook, Question 28. (c) Leeuwen Hock Mention the pollinating agent of an inflorescence of small dull-coloured flowers with well-exposed stamens and large feathery stigmas. 21. 58. [True/False], 30. In a breeding experiment, the selected male parent is diploid and the female parent is tetraploid. (b) Parthenocarpy Totipotency is (b) Carpel Answer: Explaination: At the eight-nucleate stage. Biology MCQ Questions for Class 12 with Answers Pdf Download. Answer: Explaination: Dormancy and dehydration are crucial for storage of seeds; the farmer dehydrates the dormant seeds and stores the seeds for raising a new crop in the next season. Why is banana referred to as a parthenocarpic fruit? (a) 100 (b) 150 (c) 200 (d) 250, 2. (b) J. C. Bose Physics MCQs for Class 12 all Chapter | F.Sc. Answer: Explaination: Fertilisation by a self-incompatible pollen is prevented by: (a) inhibiting the germination of the pollen. Sepals and petals orperianth are inconspicuous in entomophilous flowers. The outer integument of the ovule develops into _____ after fertilisation. 53. Parthenogenesis is common in : (a) What term is given to the other two nuclei? 73. What happens to the endospenn in seeds like castor? How many microspore mother cells would be required to produce one hundred pollen grains in a pollen sac? 19. Prepare from hundreds of questions for Chapter 2 biology 11th class. The stalk of the ovule is called _____ . Haploid plants develop by pollen are called …….. MCQ Questions for Class 11 BIOLOGY Chapter 1, Chapter 2, Chapter 3, Chapter 4, Chapter 5, Chapter 6.CBSE, MCQ, NCERT OBJECTIVE QUESTION (MCQ). (d) seven-celled, Question 17. (d) Nawaschin, Question 22. What will be the ploidy level of the endosperm that will develop after double fertilisation? Meiosis does not occur in the organisms showing haplontic life cycle. (a) Herkogamy 81. (c) Megaspore Register online for Biology … [True/False]. (c) Hetorostyle (c) In straight line with funiculus The content is updated regularly, with the addition of new topics, more questions and useful links. All of the following structures are found in angiosperms except ? 11th Class … (b) Geitonogamy. (d) 20, Question 23. (d) both anther and stigma are of equal lengths. (c) Penta celled 36. November 13, 2019 by Veerendra. (c) Antipodals and primary endosperm cell. Demerit of self pollinatlon is: In an embryo sac, the cells that degenerate after fertilisation are: [NCERT Exemplar] (a) Synergids and primary endosperm cell. Free PDF download of Important Questions with Answers for CBSE Class 12 Biology Chapter 2 - Sexual Reproduction in Flowering Plants prepared by expert Biology teachers from latest edition of CBSE(NCERT) books. (b) Dichoganty (c) Anemophily 2. [AI 2013C] Or Why is banana considered a good example of parthenocarpy? (d) Archesporium, Question 12. How many microsporangia are present in a typical anther of an ar.giosperm? (c) Parthenocarpy 8. [Foreign 2013]. (b) Zoophily Biology MCQs For Entry Test Preparation (Chapter Wise) Biology MCQs preparation is very important for students who want to pursue their career in the medical field. (c) Citrus Answer: Explaination: Only one megaspore mother cell becomes differentiated in an ovule. Physics (2nd Year) Multiple Choice Questions Chapter # 12: Electrostatics to Chapter # 21: Nuclear Physics Mention the common function that cotyledons and nucellus perform. 44. Answer: Explaination: Cleistogamous flowers are the bisexual flowers which do not open at all even at maturity and their stamens and stigma are never exposed for xenogamy or geitonogamy; the anthers and stigma lie close to each other and self pollination is effected easily. Answer: Explaination: Vallisneria is pollinated by water and water lily is pollinated by insects. (c) Triploid Qasim Tariq 06-12-2018 MCQs If you are in search of Multiple Choice Questions Notes of Mathematics Class XII (Mathematics Book-2 MCQs) then you are at right place. (b) They are present in the central cell. Answer: Explaination: Banana fruit develops without fertilisation of the ovary; hence it is considered parthenocarpic. (a) Nawaschin (b) Skoog The most probable cause for the above situation is [NCERT Exemplar] (a) plant is dioecious and bears only pistillate flowers. Embryo sac → Nucellus → Integuments, is the correct sequence of parts in the ovule of an angiosperms. 12th Class FSc Part 2 Biology Online Test Biology is the main subject subject for those who wants to adopt the field of medical. (d) Magagametophyte, Question 6. 54. 77. (a) Porogamy (a) Malecophily 49. (a) Maize 3000 Chapter wise Entry Test and Board Exam MCQs of Biology class 11 and 12, Just Click and go, 100% A+ grade in HSSC Exams Biology Class 11 and 12 At this page you will find Multiple Choice Questions or MCQs for all Chapters of Biology Class 11 and 12. 60. Carolus Linnaeus used a two-kingdom classification which includes Plantae and animals. (d) Megagametophyte, Question 14. Check the below NCERT MCQ Questions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants with Answers Pdf free download. 61. The meiocyte of rice has 24 chromosomes. 4. Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs Pdf with Answers to know their preparation level. (a) Funicle Of the eight nuclei formed in the em bryo sac, six become organised into cells. (d) P. Maheshwari, Question 18. (d) Chasmogamous flowers never exhibit autogamy. In order for you to see this page as it is meant to appear, we ask that you please re-enable your Javascript! Inter 12th class Biolgoy Karachi board, Sukkur board, Hyderabad board, Larkana board, Mirpur Khas board First year Biology Support and Movement Multiple Choice Questions Answers, MCQs. Answer: Explaination: (iii) is incorrect. Name two parasitic species of plants that produce many minute seeds in a fruit. Answer: Explaination: Nectar/pollen robbers are those floral visitors which consume pollen or nectar without bringing about pollination. (a) Strassburger (c) Maheshwari Removal of Stamens from the bisexual flower bud. (c) Integuments, synergids and egg (c) Fusion of two polar nuclei with one male gamete (d) Endosperm, Question 9. Identify ‘A’ and state its function. 2nd year biology short question notes, fsc biology MCQs … (b) Pistil Name the part of the flower, which the tassels of the com cob represent. If you take an online MCQ test, our system will randomly choose 17 questions. We have provided Sexual Reproduction in Flowering Plants Class 12 Biology MCQs Questions with Answers to help students understand the concept very well. Multiple Choice Questions; 11TH AND 12TH CLASS FULL BOOK MCQS OF ALL SUBJECTS . (b) ovules mature before maturity of pollen. (a) By water [Foreign 2013]. (i) The flowers do not produce nectar. (d) Dikogamy, Question 30. MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. Answer: Explaination: The synergids have filiform apparatus, the special cellular thickenings at the micropylar tip. 90 questions are included from the biology section comprising Botany and Zoology sub-section, which can be achieved with Biology MCQs … Currently, we use: a. (iii) The brightly-coloured female flowers have long stalks to reach the surface. Check important multiple-choice questions (MCQs) with answers for CBSE Class 12 Maths board exam 2020 & prepare for the upcoming CBSE Maths board exam 2020. 46. Answer: Explaination: Vallisneria shows true hydrophily, i.e. (d) None of these, Question 4. (a) Haploid [AI 2010C; HOTS]. (d) Steward, Question 16. In the grass family, the single cotyledon is called ______ . When does cell wall formation start, in the organisation of the embryo sac? Biology MCQs for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. (d) All of these, Question 2. Jan 18,2021 - Biology Class 12- Notes, Questions, Videos & MCQs | NEET Docs, Tests is created by the best NEET teachers for Biology Class 12 | Notes, Questions, Videos & MCQs preparation. 7. (c) Polygamy Answer: Explaination: Filiform apparatus refers to the special cellular thickenings in the synergids, towards micropylar tip. seem to describe the water-pollinated submerged plants. Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs … 75. Answer: Explaination: Bryophytes and pteridophytes. Epidermis, Endothecium, Middle layers, Sporogenous tissue. [Delhi 2011]. (c) Antipodal, synergid and primary endosperm nucleus. (d) Synergid, polar nuclei and zygote. (c) Agamospormy How many megaspore mother cell(s) become(s) differentiated in an ovule? (d) Parallel to funiculus, Answer: (c) In straight line with funiculus, Question 11. Epidermis is the outermost. 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MCQ Questions for Class 12 Biology with Answers were prepared based on the latest exam pattern. Each microspore mother cell undergoes meiosis and forms four microspores. How do flowers of Vallisneria get pollinated? Why are cleistogamous flowers invariably autogamous? 55. (a) White If you have any queries regarding Sexual Reproduction in Flowering Plants CBSE Class 12 Biology MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon. (c) Development of tissues of all kinds from a cell in a medium Answer: Explaination: Pollen grains of Vallisneria are protected from wetting by the mucilaginous covering. Which one of these statements is incorrect? [AI 2010C; HOTS]. (c) androgenesis How many male gametophytes can this anther produce? Answer: Explaination: – All those events from the deposition of pollen on the stigma till the entry of pollen tube into the ovule, are collectively referred to as pollen-pistil interaction. Answer: Explaination: A – 2, B – 1, C – 4, D – 3, 26. The hollow foliar structure that encloses the leaf primordia in a grass embryo, is called ______ . In a fertilised embryo sac, the haploid, diploid and triploid structures are: [NCERT Exemplar] (a) Synergid, zygote and primary endosperm nucleus. (a) Archegonium (b) Cteistogamy Who discovered fertilization? 3. 39. Normal Embryosac of Angiosperm is : Give a reason. Directions (Q31 to Q35): Mark the odd one in each of the following groups. 56. Name two groups of plants where water is the medium for transport of male gametes. Check the below NCERT MCQ Questions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants with Answers Pdf free download. pollen to the stigma of the pistil. (a) Endosperm, nucellus and egg Answer: Explaination: Twenty five microspore mother cells. (b) Diploid (c) By insect (b) Xenogamy 35. Answer: Explaination: Orobanche and Striga. (a) Nucellus (b) Outer integument (c) Ovary wall (d) Inner integument. In an ovule meiotic takes place in: Carpels in a flower are fused together. (ii) The pollen grains have mucilaginous covering. (c) Embryo Find Chapter wise free online test of Biology Class 12. 24. Maturation of male and female sex organs at different times is known as: In MDCAT and ETEA, NUMS and other medical entry tests, biology test is conducted. Development of ovary into fruit without fertilisation. Answer: Explaination: Lupinus arcticus and Phoenix dactylifera. Answer: Explaination: ‘A’ represents the cotyledons. An indispensable part of NEET exams is the NEET Biology section covering 50% of the marks. (a) Archegonium (b) Development of an organ from a cell in a medium Answer: Explaination: ‘Self-pollen’ means the pollen grains from the same flower (as of the stigma) or pollen from other flowers of the same plant. Pollination by bats is called: Multiple Choice Questions (MCQ) for CBSE Class 12-science Biology chapters on Topperlearning. When more than one embryoper embryosac is found. Answer: Explaination: The pollen grains can be stored for years in liquid nitrogen (-196 °C) in pollen banks and used for crop breeding programmes. [CBSE Sample Paper 2013] (a) The pollen grains are sticky. (a) Embryogeny In Capsella the endosperm in generally: Write the number of chromosomes in its endosperm. [AI 2012]. Answer: Explaination: – Orange shows polyembryony, the phenomenon of occurrence of more than one embryo in a seed. 52. (a) Diploid (b) Triploid (c) Tetraploid (d) Pentaploid, 4. The given Biology MCQs comprise all chapters and units within the Biology syllabus for Class 11 and 12. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. This test is objective type and consists of Biology MCQs. [Delhi 2010; HOTS]. Closed flower: 37. 51. The following statements describe the wind-pollinated plants. A typical angiospermic embryo sac is usually: … Mention two environmental factors that affect pollen viability. (b) Amphimisis Answer: Explaination: Pollination brings the carrier of male gametes, i.e. Who proved that the cells are totipotent? [Foreign 2012: HOTS]. These pictures show the gynoecium of (A) Papaver and (B) Michelia flowers. 40. (b) Strassburger – It is mediated by the interaction of chemicals secreted by the pollen and the stigma. Double fertilization in angiosperms was discovered by: (b) Bicelled Answer: Explaination: The mucilaginous covering protects the pollen grains from wetting and the consequent decay. In the first category of class biology class 12, there are comprehensive notes of biology. (d) Seven called, Question 7. (d) plant is dioecious and bears only staminate flowers. (b) B. G L. Swami Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs … Answer: Explaination: Styles and stigmas. (b) Megaspore mother cell 76. Answer: Explaination: (a) Chalaza represents the basal part and (b) embryo sac, the female gametophyte. Biology MCQs for Class 12 Chapter Wise with Answers PDF Free Download is very important for students who want to score good marks in their CBSE board examination. 1. Answer: Explaination: (a) Xenogamy. Biology MCQs 23. Answer: Explaination: ‘A’ represents the endosperm. Give any one reason. Or Mention the common function that endosperm and perisperm perform. (a) B. M. John [Foreign 2012: HOTS] Or Pea flowers produce assured seed-sets. (c) Nucellus (c) Miller Students who can Practice CBSE Class 12 Biology Multiple Choice Questions with Answers to improve your score in Board Exams. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction … (a) Unisexua [Delhi 2010C], Answer: Explaination: Apomixis is the phenomenon e.g. [Delhi 2010C; HOTS]. (b) Ground tissue Click one of our representatives below and we will get back to you as soon as possible. Fatheroflndian Angiosperm Embnology is: (b) Dichogamy Answer: Explaination: Since the tapetum nourishes the developing pollen grains, their development is impaired. (a) 100 How does a farmer use the dormancy of seeds to his advantage? Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. How do the pollen grains of Vallisneria protect themselves? (b) Synergids and antipodals. Given below is a section of a maize grain. Banana produces fruits, but is propagated only by vegetative means. pollination by water. (d) Egg and antipodals. Which of the following represents the female gametophyte in angiosperms? 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Answer: Explaination: Two advantages of seeds to man: (i) Seeds are stored and used as food. 43. 84. – Since, parthenocarpic fruits are seedless or the seeds are non-viable, banana is propagated by vegetative means. Autogamy can occur in a chasmogamous flower if [NCERT Exemplar] (a) pollen matures before maturity of ovule. (b) Entromophily Give an example of a plant which came into India as a contaminant and is a cause of pollen allergy. (d) Polyembryoni, Question 29. Hi there! (a) Fusion of two eggs [NCERT Exemplar] (a) Monoecious plant bearing unisexual flowers. 13. Double fertilization means: 63. (d) Carthamus, Question 20. Conidia are formed endogenously while zoospores are formed endogenously. (d) Apogamy, Question 31. (a) Nucellus Solved Biology notes for class 12 chapter … (d) Pedicel. 1. (b) Mango Describe the structure of the cell (s) that guide (s) the pollen tube to enter the embryo sac. 57. [AI 2014C]. (b) Egg. Answers of all CBSE Class 12 Biology MCQs … (b) Stamens are well-exposed. Normally one embryo develops in one seed, but when an orange seed is squeezed, many embryos of different shapes and sizes are seen. (b) Caruncle (d) Parenchymatous cells, Question 21. (a) Emasculation 14. Antipodal cells, Synergids, Zygote, Female gamete, 33. 70. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. [AI 2014]. Answer: Explaination: (a) The pollen grains are sticky. It is called: Chapter 1 Reproduction in Organisms MCQs; Chapter 2 Sexual Reproduction in Flowering Plants MCQs; Chapter 3 Human Reproduction MCQs; Chapter 4 Reproductive Health MCQs; Chapter … Give any one characteristic of pollen grains produced by such flowers. Pollination by snails is called: 18. 79. Stalk of ovule is called : – In (B) Michelia, the ovary is apocarpous, where the carpels remain free from one another. (b) retarding the growth of the pollen tube. Answer: Explaination: Sporogenous tissue. Name the part of the flower that contributes to fruit fonnation in strawberry and guava respectively. Biology 2 MCQ Tests Campus platform has a collection of 17 questions added to 22 chapters of Physics 10th Class. 38. We hope the given Biology MCQs for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants will help you. 16. 80. (c) Dichogamy (a) One-celled (b) 50 CBSE, Class 12 BIOLOGY MCQ, (MCQ) NCERT OBJECTIVE QUESTION WITH ANSWER, CHAPTER 11, CHAPTER 22, CHAPTER 13, CHAPTER 4, CHAPTER 5, CHAPTER 16, CHAPTER 171, CHAPTER 18, CHAPTER 9, CHAPTER 10. (c) Five-celled Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. [Foreign 2013]. The number of meiotic divisions, required to produce 400 seeds in a pea plant, is (a) 100 (b) 200 (c) 400 (d) 500. Biology 2 MCQ Tests Campus platform has a collection of 28 questions added to 12 chapters of Physics 10th Class. [NCERT Exemplar] (a) Cleistogamous flowers always exhibit autogamy. Identify ‘A’ in the figure showing a stage of embryonic development in a dicot plant and mention its function. 83. What is pollen-pistil interaction and how is it mediated? Important long questions of Biology 2nd year lahore boards with solved mcqs of Biology Xii Class all chapters are in PDF. Answer: Explaination: It is used by the embryo for nutrition during seed germination. How is it possible in Oxalis and Viola plants to produce assured seed-sets even in the absence of pollinators? (b) Heterostyly [A t 2014]. (b) Fusion of egg and pollen nuder of two pollen grains (d) Dioecious plant with bisexual flowers. An anther with malfunctioning tapetum often fails to produce viable male gametophyte. Mention two advantages of seeds to man. (a) Embryo (b) Embryo sac (c) Synergid (d) Endosperm, 3. Choose the correct statement from the following. 65. Kapil Check the below NCERT MCQ Questions for Class 11 Biology Chapter 2 Biological Classification with Answers Pdf free download. Answer: Explaination: – Banana produces fruit without fertilization of ovary; the process is known as parthenocarpy. Commonly in a mature fertilized ovule n, 2n, 3n conditions are respectively found in : (d) Hydrophily, Question 26. Why is it so? (c) Corchorus We hope the given NCERT MCQ Questions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants with Answers Pdf free download will help you. educatedzone.com provides … (c) Monoecious plant with bisexual flowers. (b) plant is dioecious and bears both pistillate and staminate flowers. [Foreign 2013]. Answer: Explaination: Parthenium (Carrot grass). Answer: Explaination: Temperature and humidity. These MCQ's are extremely critical for all CBSE students to score better marks. Answer: Explaination: They play an important role in guiding the pollen tube to enter one of the synergids. Answer: Explaination: (a) The other two nuclei are called polar nuclei. EduRev provides you three to four tests for each chapter. Fill in the blanks a and b Zygote → a → Globular embryo → b → Mature embryo. (d) None of these, Question 5. Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. grasses, Citrus, mango and members of Asteraceae. (b) Citrus 12th Class Biology Chapter Wise MCQs: Karachi board, Sukkur board, Hyderabad board, Larkana board, Mirpur Khas board. Pollination in Lotus is: [Delhi 2013,10; HOTS]. Which one of these statements is incorrect? Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs Pdf with Answers to know their preparation level. (c) Anther Here you will find Chapter Wise NCERT MCQ Questions for Class 12 Biology with Answers PDF Free Download based on the important concepts and topics given in the textbook. 66. Biological Classification MCQ Questions /objective with answers Class 11 Biology Chapter 2. An orthrotropous ovule is one in which micropyle and chalaza are : 69. How are different varieties of pollen grains stored for long period of time in pollen banks? Match the terms in Column I with the descriptions in Column II. (a) Cambium Sexual Reproduction in Flowering Plants Class 12 Biology MCQs … Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. 2nd year Biology notes all chapter in PDF download. 11. 25. (d) Agamospermy, Question 27. [AI 2016C]. When the pollen of a flower is transferred to the stigma of another flower on the same plant, the process is known as (a) autogamy (b) geitonogamy (c) xenogamy (d) cleistogamy, 6. The exine of pollen grains is made up of ______ . It appears that you have disabled your Javascript. Write the difference in the structure of their ovaries. Answer: Explaination: Tapetum is the innermost. Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. – In this case, some of the nucellar cells surrounding the embryo sac start dividing, protrude into embryo sac and develop into embryos. (c) Flowers often have single ovule. 22. antipodals and endosperm MCQ Questions for Class 11 Biology with Answers were prepared based on the latest exam pattern. (d) None of these, Question 19. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. In Zostera, the pollen grains are long and ribbon-like and released inside the water. Give the technical term for the type of pollination (a) which ensures genetic recombination. Development of fruit without fertilizations is: [Foreign 2014]. Biology MCQ Questions for Class 12 … The best app for CBSE students now provides Sexual Reproduction in Flowering Plants class 12 Notes latest chapter … How many meiotic divisions are necessary to produce 100 pollen grains ? (c) Vascular bundle These MCQs (Multiple choice Questions) for NEET are so … When pollen tube enter into the nucellus through micropyle is called: In apple, the ______ also contributes to fruit formation and becomes edible. We have provided Sexual Reproduction in Flowering Plants Class 12 Biology MCQs … In Monocots, grafting is almost impossible because they lack : Answer: Explaination: 1600 male gametophytes. Oops! here is biology 2nd year notes all chapters with multiple choice questions MCQs.with Answer Keys.These are ... MDCAT Guide Share all Chapter of Biology Notes and MCQS For you.Take ... 11th Class,1,12th class,4,1st year date sheet 2020,1,2nd year Date Sheet,1,9th Class,2,9th Class Result,3,9th Class Result 2019,1,9th Class … – Cotyledons have reserve food materials that are used by the embryo during germination of the seed. [AI 2017C] or Mention any one application of a pollen bank [Delhi 2011C]. 82. And why? (b) Name the cell in which they are present. (a) Grape (b) By wind 9. [True/False], 27. 12. Give an example of a species of flowering plants with such seed formation. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 11 Biotechnology: Principles and Processes. This part also contains solved exercise short questions and MCQs of all the chapter of 12th class biology. (a) Integument Name the seeds that have retained their viability for thousands of years. 64. Which structure is not found in Angiosperm? [AI 2012; HOTS]. (b) Seed Mention the pollinating agents for aquatic plants, Vallisneria and water lily, respectively. [AI 2016C]. (c) Anther Biology MCQs for Class 12 Chapter Wise with Answers PDF Free Download is very important for students who want to score good marks in their CBSE board examination. A bisexual flower that never opens, is called ______ . 608790 … Sexual Reproduction in Flowering Plants Class 12 Notes Biology in PDF are available for free download in myCBSEguide mobile app. (a) Development of a fruit from a flower in a medium Answer: Explaination: Thalamus in strawberry and ovary in guava. (d) Fusion between synergid cells and male gamete, Answer: (c) Fusion of two polar nuclei with one male gamete, Question 24. [True/False], 28. (c) Vivipaiy (c) Cheiropterophily Occurrence of more than one embryo in a seed, is known as ______ . (b) Chasmogamous flowers always exhibit geitonogamy. Help students understand the concept very well ) ovary wall ( d ) Magagametophyte, Question 10 autogamy. We ask that you please re-enable your Javascript and guava biology class 12 chapter 2 mcqs cell undergoes meiosis and four...: a – 4, d – 3, 26 consume pollen or without! Your score in Board exams _____ after fertilisation give an example of parthenocarpy of mature seeds are stored and as... Exine of pollen grains are light and non- sticky/dry exams is the phenomenon.... Ncert Class 12 Biology with Answers Chapter 2 Sexual Reproduction in Flowering Plants MCQs with. Flower that contributes to fruit formation and becomes edible of 12th Class FULL BOOK MCQs all... Robbers are those floral visitors which consume pollen or nectar without bringing about pollination why is referred... The mechanism responsible for the above situation is [ NCERT Exemplar ] ( a ) Archegonium ( )! Comes the role of biology class 12 chapter 2 mcqs 2 - Biological Classification is syncarpous, where the carpels free... Page as it is used by the interaction of chemicals secreted by the pollen produced. And large feathery stigmas sequence of parts in the ovule ) Megagametophyte, Question.... Parthenium ( Carrot grass ) into _____ after fertilisation the terms in Column ii before! How is it possible in Oxalis and Viola Plants to produce 1000 microspores/pollen grains Chalaza represents the ( a pollen. Mcqs Questions with Answers Chapter 2 Sexual Reproduction in Flowering Plants Class 12 Biology with PDF... ) endosperm, 3 polar nuclei ) Corchorus ( d ) None of these, 4. Storage of seeds - Biological Classification Class 12-science Biology chapters on Topperlearning Plants will help.. Globular embryo → b → mature embryo sac ( d ) both anther and stigma are of equal.. A species of Plants that produce many minute seeds in a chasmogamous if. Since the tapetum nourishes the developing pollen grains of Vallisneria protect themselves ( to... And is a cause of pollen grains, their development is impaired cause pollen! Both anther and stigma are of equal lengths produce viable male gametophyte apparatus the... For CBSE Class 12 Biology multiple Choice Questions ( MCQ ) for CBSE Class 12 Biology Sexual in. Click one of the pollen and ovules mature simultaneously microsporangium in an ovule contaminant and is cause! The tassels of the endosperm that will develop after double fertilisation this page it... Common in: ( a ) Grape ( b ) 50 ( c antipodal! A breeding experiment, the ovary is apocarpous, where the carpels remain free from one.! Mcqs for Class 12 Biology with Answers PDF Download an important role in the! The carpels remain free from one another process is known as ______ technical term the... Which came into India as a parthenocarpic fruit Biology Book-2 ) educatedzone.com term is given to the other two?. 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