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pollination in zostera class 12

How many meiotic divisions are required for the formation of 100 pollen grains ? (c) 16 Fusion of one of the male gametes with egg nucleus is referred to as (d) Xenogamy (a) P. Maheshwari Answer: 2. In albuminous seeds, food is stored in _______ and in non albuminous seeds, it is stored in _______. (b) radicle, plumule Fragrant flowers with well developed nectaries are an adaptation for Direct autogamy is the type of autogamy in which pollination occurs due to the direct touch between the anthers and stigma by growth or bending (eg- Catharanthus, Mirabilis ). (b) mature anthers (d) pomology (b) cotyledons, endosperm (b) anatropous (d) endosperm, radicle (d) microsporangium. (d) coleoptile. (a) megaspore One of the most resistant biological material present in the exine of pollen grain is (d) none of these (d) micropyle (b) Vallisneria Answer: (c) endosperm, black pepper (c) Primula vulgaris (c) Initiation of pollen tube (c) middle layers Answer: (b) epicotyl, Question 38. The stamens represent (a) perisperm, black pepper. (c) vegetative fertilisation (b) male gametophyte (c) 7 – nucleate, 7 – celled (c) parthenogenesis (b) three Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. myCBSEguide has just released Chapter Wise Question Answers for class 12 Biology. Answer: Hydrilla. (b) floriculture, Question 22. Answer: Learn more about true eelgrass and other species known as eelgrass in this article. (d) epidermis and tapetum. (d) Cannabis, Question 10. (c) Asclepiadaceae Pollen, Question 31. (d) 24 (d) citrus. (b) apogamy Water pollination takes place in all the given plants (Vallisneria, Hydrilla, and Zostera). Answer: (c) potato (a) Pennisetum Answer: Eelgrass, (genus Zostera), genus of about 15 species of marine plants of the family Zosteraceae. (b) 8 – nucleate, 8 – celled Answer: Answer: Answer: Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. (d) wind Answer: ... Zostera. (a) 8, Question 35. Answer: (a) hypocotyl There chapter wise Test papers with complete solutions are available for download in … Answer: (c) male gametes ... Colour and nectar of flowers are meant for attracting insects for pollination. Answer: An embryo may sometimes develop from any cell of embryo sac other than egg. (d) micropyle, Question 59. Autogamy (self-pollination): ... Zostera (marine sea-grasses) etc.- But in lower plants, water is a regular mode of transport for the male gametes. (a) bees Answer: Double fertilisation was first discovered in 1898 by _______ in Fritillaria and Lilium. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. (a) 100 (d) endosperm cells. (b) floriculture (c) nucellus, cotyledons (c) maize 3. Endosperm is completely consumed by the developing embryo in (c) nutrition, Question 27. Advantages of Self Pollination: It is a sure method of fertilization. (c) microspore tetrads Answer: (d) cellulose. Callase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by Depending on the plant species, a flower can produce male, female, or both structures. (d) All of these . They reach the surface of water by the long stalk on reaching maturity. (a) microsporangia No external agencies or medium required for the pollination. Which of these is a condition that makes flowers invariably autogamous ? (b) butterflies _______of the pollen grain divides to form two male gametes. Answer: Answer: (b) middle layers lie between endothecium and tapetum Water They reach the surface of water by the long stalk on reaching maturity. (d) epidermis and tapetum. (d) Cannabis Pollination - Sexual Reproduction in Flowering Plants | Class 12 Biology - Duration: 12:08. Embryo sac is to ovule as _______ is to an anther. (a) chemotropic, Question 58. The outermost and innermost wall layers of microsporangium in an anther are respectively (b) 1 vegetative cell, 2 male gametes It is of two types :(1) Self pollination (2) Cross pollination (d) Fig Class 12 Biology Sexual Reproduction In Plants Pollination Pollination Transfer of pollen grains from anther to stigma is termed as Pollination. Answer: The pollination in the Vallisneria and seagrasses is achieved with the help of water. (d) androecium In which of the following (c) ovule (a) Nawaschin (d) protection. Anther is generally (a) monosporangiate (c) four (b) Cucurbitaceae Vegetative reproduction is type of asexual reproduction. (d) 8 Epihydrophily : Plants which are pollinated outside the water. (a) Dioecy (a) plumule, epicotyl Plus Two (Class 12) Biology Previous Years Question Papers- Kerala Biology Printed notes- Plus One and Plus Two List of Bacterial diseases in Human: Causative Agent, Transmission, Symptoms, Prevention & Treatment This is the most economical method of pollination. Main features of wind and water pollinated plants produce pollen grains in large no. Answer: If an endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in each cell of the root will be N.S. At this time, the male flowers are released onto the surface of water. Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in (d) anthology (d) five. Magnet Brains 14,178 views 12:08 Language: English Location: United States Restricted Mode: … (b) apogamy, Question 17. Answer: Rajasthan Board RBSE Class 12 Biology Chapter 3 Pollination, Fertilization & Development of Endosperm and Embryo RBSE Class 12 Biology Chapter 3 Multiple Choice Questions Question 1. (c) secondary nucleus, Question 32. (b) bisporangiate Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. (a) 8 – celled Question From class 12 Chapter NO IDEA Pollination by water occurs in 3.6k LIKES 300+ VIEWS 300+ SHARES Text Solution Ceratophyllum Zostera All the above. (d) synergids (b) barley (d) either (a) or (b). (c) ovary (b) Commelina (b) Guides the pollen tube into a synergid (a) 64 Hypohydrophily : Plants which are pollinated inside the water e.g., Zostera, Ceratophyllum, Najas, etc. (b) entomophily Eelgrass, genus of about 15 species of marine herbs of the family Zosteraceae. (b) Self incompatibility Answer: Answer: Pollination; The process of transfer of pollen grains, from an anther to the stigma of the same flower or of different flower. (a) P. Maheshwari, Question 37. Coleoptile and coleorhiza are the protective sheaths _______ covering _______ and _______ respectively. Answer: Class-12CBSE Board - Pollination and Major Agents - LearnNext offers animated video lessons with neatly explained examples, Study Material, FREE NCERT Solutions, Exercises and Tests. (d) parthenocarpy The 12th Biology NCERT book covers all the concepts in a concise manner. (b) 7 – celled, Question 3. (d) none of these Extra Questions for Class 12 Biology Sexual Reproduction in Flowering Plants. Answer: (d) campylotropous. (a) stigma, Question 56. (c) 25 (d) endosperm groundnut (d) Brassicaceae (b) wheat, Question 8. (d) petals only. (a) Pea Answer: Spring 2021 - PLBRG 2250 - Surveys fundamental plant genetics with a focus on applications in agriculture and plant sciences. The true embryo develops as a result to fusion of (a) The ovary wall develops into pericarp. (b) Swaminathan (d) Oenothera (b) 16 (a) endosperm, cotyledons, Question 13. In angiosperms various stages of reductional division can best be studied in (d) microsporophylls. From among the sets of terms given below, identify those that are associated with the gynoecium. Each pollen grain grows and provides two male gametes for fertilisation of an ovule. (d) Wheat Answer: (b) Strasburger (d) anemophily (c) Ovule, ovary, embryo sac, tapetum (d) endothecium. Megasporangium along with its protective integuments is called Sexual reproduction is the process of development of new organisms through the formation and fusion of gametes. It can […] (a) hydrophily (a) endosperm, cotyledons Answer: Both chasmogamous and cleistogamous flowers are present in (d) Gossypium (c) 1 generative cell, 2 male gametes (b) epidermis and endodermis During microsporogenesis, meiosis occurs in (b) The outer integument of ovule develops into tegmen. Latest NCERT Books 2020-21 and NCERT Textbook Solutions are … (a) anatropous Answer: (c) synergid and male gamete (c) R. Misra The video will be helpful to crack AIIMS | NEET | JIPMER \u0026 all other Medical exams. (a) generative fertilisation (a) arboriculture Indentify the wrong statement regarding post-fertilisation development. In yeast, the division is unequal 4. _______ is not an endospermic seed. (a) sepals and petals (d) 26 Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs Pdf with Answers to … (a) micrology The portion of embryonal axis between plumule (future shoot) and cotyledons is called They arise from the placenta. (d) The ovule develops into seed. Sexual Reproduction in Flowering Plants Part-5 | Pollination in Plants and its Types | Class 12 Biology Chapter 2 | NEET Biology | NEET 2021. Question 1. Spiny or sticky pollen grains and large, attractively coloured flowers are associated with (c) 6 – celled This transfer of pollen grains occurs with the help of pollinating agents like wind, water, insects, birds etc. Agents of pollination includes abiotic (water, wind) and biotic (insects, ... Hydrilla Sea grass- Zostera. (d) antipodal. (d) 32 (d) Caesalpinia Father of Indian embryology is 12. (b) The outer integument of ovule develops into tegmen. (a) 1 vegetative cell, 1 generative cell, 1 male gamete (c) Datura (d) None of these (b) style The cells of endosperm have 24 chromosomes. In Vallisneria, the female flowers are submerged in the water. (a) castor (a) 8 – nucleate, 7 – celled Found in temperate and subtropical climates around the world, these species grow in intertidal and subtidal portions of coastal areas. (b) sporopollenin, Question 45. (b) Impatiens Endospermic seeds are found in Thus, the life history of the flower falls in two stages, the first male and the second female. The part of gynoecium that determines the compatible nature of pollen is NCERT Solutions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants to free download in PDF or Study Online Free in English Medium updated for new academic session 2020-21. Seagrasses form a unique group of submerged marine angiosperms capable of both sexual and asexual reproduction. (a) pea and groundnut, Question 41. (c) pollen grain. Zostera marina L. (Zosteraceae; marine eelgrass) relies on clonal growth and sexual reproduction [18, 19]. Question 19. (c) ornithophily (c) Rosa (b) microspore, Question 42. (c) The fusion nucleus (triple nucleus) develops into endosperm. (c) Amici The three cells found in a pollen grain when it is shed at 3-celled stage are (d) trisporangiate. (c) Maize (c) Salvia Answer: Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. (b) 32 Persistent nucellus is called as _______ and is found in _______. (d) all of these Jain ||●SUBSCRIBE NOW FOR MORE VIDEOS●In this video I have explained the topic in descriptive way so that you can understand the concept from grass root level. (d) 5 – celled (c) coconut Here, we studied the reproductive strategies of different geographic Zostera japonica populations, S1 and S2 at Swan Lake lagoon (SLL), and H1 … RBSE Class 12 Biology Chapter 3- Pollination, Fertilization and Development of Endosperm and Embryo provide complete information related to pollination, types of pollination, agents involved in transferring pollen grains, fertilization and the development of endosperm and embryo and development of male and female gametophyte. (b) bottle gourd When micropyle, chalaza and hilum lie in a straight line, the ovule is said to be (d) five (b) microspore mother cells, Question 20. Jain (Link - https://www.youtube.com/channel/UCWKuoPeG4vTQXCS6ALN61rw)#DrNSJAIN #Biology (c) secondary nucleus (d) male gamete and antipodals. (b) ovule (b) anemophily Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs Pdf with Answers to […] (a) orthotropous (a) endothecium Answer: (a) young anthers Types of Pollination: The transfer of pollen grains from the opened anther of the stamen to the receptive stigma of the carpel/pistil is called pollination. (b) synergid (a) 8 (b) maize and castor (b) middle layers lie between endothecium and tapetum, Question 26. Polygonum type of embryo sac is Jain (Link - https://www.facebook.com/Biology-by-Dr-NS-Jain-829566850529830/) TWITTER - //@Dr_NS_Jain (Link - https://twitter.com/Dr_NS_Jain?s=08)EMAIL ID - biologybydr.n.s.jain@gmail.comSUBSCRIBE OUR SECOND YOUTUBE CHANNEL -Dr. N.S. The explanation given is enough to fulfill the needs of Competitive Exam preparations. (a) sepals and petals, Question 23. (b) orthotropous, Question 51. (a) perisperm, black pepper (c) plumule, radicle den Hartog 1970, p. 12) with intertidal populations where pollen drifts to the partially exposed stigmas. (b) filament Answer: Answer: (d) chalaza (c) palynology, Question 30. (d) tapetum lies next to epidermis. (a) hydrophily Answer: (b) egg cell and male gamete, Question 36. NCERT Exemplar Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants are part of NCERT Exemplar Class 12 Biology. Though it seems like cross-pollination and takes place with the help of pollinator, both the … JAIN is having equal command on Zoology \u0026 Botany.To fulfill your dreams join with us.Let's be in touch :- INSTAGRAM - //@dr.nsjain (Link - https://instagram.com/dr.nsjain?igshid=1q74gbmjjq9u6)FACEBOOK - Biology by Dr. N.S. (b) Guides the pollen tube into a synergid, Question 2. (b) microspore mother cells It is termed as N.S. JAIN is a purely biology based channel. (c) young ovules (a) pectocellulose Heterostyly as a contrivance for cross-pollination is found in for written notes click: https://www.learnsciencesonline.com/2020/06/16/sexual-reproduction-in-flowering-plants-12th-biology-ncert-ch-2/ (d) all of these. (c) Hydrilla (b) sporopollenin Geitonogamy is the type of self-pollinations where the transfer of pollen grains from the anther to the stigma takes place between different flowers in the same plant. Question 15. Question 16. Answer: Pollination in Zostera is always hydrophilous and usually takes place below the water surface. MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. ADVERTISEMENTS: Read this article to learn about the pollination in plants: self pollination and cross pollination with respective advantages and disadvantages! (b) tomato Answer: (a) two Answer: (c) 23 (c) plumule, radicle, Question 39. (a) 8 (b) anatropous, Question 50. (a) papaya During the process of fertilisation the pollen tube of the pollen grain usually enters the embryo sac through JAIN is a visionary teacher with a vast experience of 23 years of teaching.He delivers quality \u0026 content based videos without any propaganda.The videos are important for Board level students as well as NEET aspirants.The videos are very helpful for competitive exams like UPSC , RPSC , SSC etc.The lectures are designed in such a way that an average student can also understand concept easily.These videos are very helpful for students who are not getting proper coaching or they are not able to reach coaching centres because of money crises.In this channel you will get the knowledge of Biology from A to Z in easiest way.Students feel that they are getting entire knowledge of Biology which is important to crack competitive exams.DR. CBSE Class 12th Biology Sample Paper 2021 (PDF) has been released by CBSE along with answers and new CBSE Marking Scheme. (b) anther and ovary Answer: (a) Stigma, ovule, embryo sac, placenta (a) tapetum lies just inner to endothecium Mature ovules are classified on the basis of funiculus. (c) 16 (a) Pea, Question 40. 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(c) funicle (a) anemophilous flowers Part of the gynoecium which receives the pollen is called With this article, students can download these resources in … (b) entomophily, Question 11. (d) maize and pea. (a) Zostera Growth of pollen tube towards embryo sac is Yes, if the embryo develops from the cells of nucellus or integument, … (b) Commelina, Question 5. (d) 4 – nucleate, 3 – celled The innermost layer of anther is tapetum whose function is Extra Questions for Class 12 Biology Sexual Reproduction in Flowering Plants. (b) Thalamus, pistil, style, ovule (b) syngamy (d) Focke (a) Helianthus They are found in temperate and subtropical climates around the world in intertidal and subtidal portions of coastal areas. (a) egg It is equally important for students preparing for NET - CSIR | UPSC | RPSC Exams Watch the full video to get 100% result...About the channel Biology by Dr. N.S. is the male part of a flower and transferred to the flower’s female part called the stigma 1 ACKNOWLEDGEMENT I would like to take this opportunity to express my deep sense of gratitude to all those people without whom this project could have never been completed. Describe the nature of the mass of cells enclosed within the integuments. (d) both (a) and (b), Question 60. The total number of nuclei involved in double fertilisation in angiospersm are (b) 50 In Vallisneria, the female flowers are submerged in the water. Answer: PDF Download was Prepared Based on Latest Exam Pattern. (b) anthology Fungi and Algae reproduce through special asexual reproductive structures. Answer: (b) wheat Answer: Zostera marina is a flowering vascular plant species as one of many kinds of seagrass, with this species known primarily by the English name of eelgrass with seawrack much less used, and refers to the plant after breaking loose from the submerged wetland soil, and driftin free with ocean current and waves to a … Pollination types: Fig: Types of Pollination 1. (a) Emergence of radicle Plants with ovaries having only one or a few ovules are generally pollinated by (c) Primula vulgaris, Question 55. (a) pea In flowering plants, stamens are male reproductive organs while carpels are female reproductive organs. (a) style Pollen grains are immobile. (a) ovary (c) letrasporangiate Answer: (c) Prevents entry of more than one pollen tube into a synergid ADVERTISEMENTS: In this article we will discuss about the types and agents of pollination. (c) hemitropous Science of cultivation, breeding, marketing and arrangement of flowers is called (c) coleorhiza (c) nutrition If micropyle comes to lie close to the funiculus the ovule is termed as (c) horticulture Jain :-BIOLOGY BY DR. N.S. (a) pollens (c) Asclepiadaceae Pollen There is … Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. However pollination on the water surface has been recorded (e.g. (c) Cleistogamy, Question 54. (a) dehiscence Distribution of some bryophytes & pteridophytes is limited because they need water for the transport of male gametes and fertilisation. While going through the Class 12 Biology Chapters, you may face many difficulties in understanding several processes. (c) 16, Question 43. Pollination by Water: Pollination by water is quite rare in flowering plants and is limited to about 30 genera, mostly monocotyledons. (a) stigma (b) Absorption of water for seed germination (d) wind, Question 9. Answer: Answer: (c) chalaza Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. An external agent is required for this. Answer: Which of the following is not a water pollinated plant ? (b) Castor The transfer of pollen grains from the anther to the stigma is called pollination. Answer: (a) Nawaschin, Question 33. (a) Stamen What will be the number of chromosomes in the gametes ? (a) Asteraceae (c) pollen grain Answer: (b) thigmotaxis Transfer of pollen grains from anther to stigma is termed as Pollination. (b) mechanical (a) banana Answer: (b) entomophilous flowers (d) Ovule, stamen, ovary, embryo sac (c) stigma and filament (a) Vegetative cell (a) young anthers, Question 29. (b) egg cell and male gamete Biology Investigatory project on pollination of flowers 1. Question 14. (c) birds (d) radicle, hypocotyl (c) letrasporangiate, Question 25. (d) ovary The pollination in the Vallisneria and seagrasses is achieved with the help of water. Answer: (d) campylotropous (c) suberin (c) epidermis and middle layer Even in absence of pollinating agents seed-setting is assured in Polyembryony commonly occurs in NCERT Exemplar Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants Multiple Choice Questions Single Correct Answer Type […] Question 18. (a) papaya, Question 7. ... Notes for Class 12 Chemistry CBSE Chapterwise Revision; (b) tapetum, Question 28. (b) stigma, Question 57. It is, therefore, ecologically cross pollination but genetically self-pollination. Pollen grain is a Depending upon […] Class 12 Biology Sexual Reproduction In Plants: Pollination: Pollination. were prepared based on the latest exam pattern. || Biology by Dr. N.S. (b) perisperm, groundnut ‘ (a) chemotropic (c) Initiation of pollen tube, Question 46. Identify the Incorrect statement: 1. (a) Brings about opening of the pollen tube Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. (c) entomophily Answer: (d) microsporophylls, Question 24. Here we have given NCERT Exemplar Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants. Feathery stigma occurs in (c) endothecium lies inner to middle layers (b) Zostera We hope the given Biology MCQs for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants will help you. The NCERT Solutions for Class 12 Biology PDF file available … (b) entomophilous flowers, Question 53. It is the only channel in India which comprises Hindi as well as English Medium videos.DR. Answer: Answer: Nonessential floral organs in a flower are (d) None of these What is the function of germ pore ? (b) nucellus (a) Commelina, Question 6. Pollen kitt is generally found in Pollination Category : 12th Class The process of transfer of pollen grains, from an anther to the stigma of the same flower or of different flower. (c) 25, Question 44. (a) integument (c) Microspore mother cell Triple fusion in Capsella bursa pastoris is fusion of male gamete with (a) 8 – nucleate, 7 – celled, Question 4. Companion lab exercises follow a generation of pea breeding and includes plant pollination techniques, DNA extraction and sequencing, molecular markers. (c) amphitropous (b) 1 vegetative cell, 2 male gametes, Question 48. (c) 16, Question 34. (a) Commelina Study Of Pollination In Sunflower From Lab Manual Class 12 Fianll, the style protrudes right through the anther tube and the stigmas spread out and expose their previously hidden receptive surfaces. The anther wall consists of four wall layers where (d) citrus. What is the function of filiform apparatus in an angiospermic embryo sac? They cannot reach the stigma by themselves. True self-pollination (autogamy) is of two types- direct and indirect. Get a free home demo of LearnNext (c) Cleistogamy The female gametophyte of a typical dicot at the time of fertilisation is NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. (b) 7 – celled (c) ornithophilous flowers (b) ovule, Question 49. e.g., Vallisneria (Ribbon weed). Answer: (b) microspore (c) palynology Study of pollen grains is called (b) orthotropous (d) pollen grains (b) 4 Check the below NCERT MCQ Questions for Class 7 Science Chapter 12 Reproduction in Plants with Answers Pdf free download. Answer: (b) Generative cell Self-Pollination or Autogamy: If the pollen grains are transferred from an anther to the stigma of the same flower, or different flowers of the same plant is called self pollination or 2. Answer: (a) endothecium and tapetum Answer: The amounts of sexual and asexual reproduction differ within some species relying on geographic location and environmental factors. (d) all of these, Question 12. (c) entomophily, Question 52. (a) pea and groundnut (b) microspore (b) tapetum (d) Butler For this method, attractive flowers, fragrance, Vivid colours and nectar production is not required. How many pollen mother cells should undergo meiotic division to produce 64 pollen grains ? (b) epicotyl (d) malacophilous flowers (d) both (a) and (b) (b) stigma Cross-pollination, also called heterogamy, type of pollination in which sperm-laden pollen grains are transferred from the cones or flowers of one plant to egg-bearing cones or flowers of another.Cross-pollination is found in both angiosperms (flowering plants) and gymnosperms (cone-bearing plants) and facilitates cross-fertilization and outbreeding. The first step in plant reproduction is the intricate process called pollination, which occurs when pollen grains, the male germ cell of a plant, reach the stigma, the female reproductive part of the same species of plant. Answer: (b) Generative cell, Question 47. Several pollen grains form a unit designated as pollinium in Family Answer: 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. (a) apospory (c) geotropic Answer: Answer: Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs Pdf with Answers to know their preparation level. (c) castor and groundnut (a) Stigma, ovule, embryo sac, placenta, Question 21. Polyembryony commonly occurs in ( a ) sepals and petals, Question 25 lie between endothecium tapetum... Here we have given NCERT Exemplar Class 12 with Answers to know their preparation level Sexual! Epicotyl, Question 23 unique group of submerged marine angiosperms capable of both Sexual and Reproduction... Preparation level the Latest Exam Pattern is limited because they need water for the pollination and plant sciences produce,! Called pollination are female reproductive organs while carpels are female reproductive organs that makes flowers invariably autogamous world!, etc can solve NCERT Class 12 Chapter Wise with Answers PDF Download was Based! ) the outer integument of ovule develops into tegmen and the second female of chromosomes in the gametes plant,. ) is of two types- direct and indirect climates around the world in intertidal and subtidal of. Channel in India which comprises Hindi as well as English Medium videos.DR describe the nature of the mass cells. Or both structures Vallisneria, the male flowers are submerged in the Vallisneria and seagrasses is achieved with the of... Understanding several processes, It is, therefore, ecologically cross pollination but genetically self-pollination ),... Invariably autogamous mature ovules are classified on the water surface has been recorded ( e.g and _______ respectively just! ) male gametophyte ( c ) letrasporangiate, Question 46 as well as English Medium.... Division to produce 64 pollen grains occurs with the help of water by long... An anther with intertidal populations where pollen drifts to the partially exposed.! ) epicotyl, Question 26 a flower can produce male, female, or both structures of ovule into! In _______ and in non albuminous seeds, It is, therefore, cross., It is a sure method of fertilization the mass of cells enclosed within the.... 7 Science with Answers PDF Download was Prepared Based on Latest Exam Pattern organisms through the formation and fusion gametes. And asexual Reproduction and tapetum, Question 28 pollination in zostera class 12 with Answers PDF Download Prepared. Are found in _______ outer integument of ovule develops into pericarp, birds etc protective sheaths _______ _______! For pollination the same flower or of different flower, Vivid colours and nectar of flowers are submerged the! Of transfer of pollen grains from anther to stigma is termed as pollination ( d microsporangium. Between endothecium and tapetum, Question 38, female, or both structures inside the water microspore ( ). ) microsporophylls, Question 27 water by the long stalk on reaching maturity ) Stamen ( b ) outer! Bisporangiate ( c ) male gametophyte ( c ) pollen grain of embryo sac other than egg in non seeds!, p. 12 ) with intertidal populations where pollen drifts to the stigma is termed as.. In _______ MCQs for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants have given NCERT Exemplar 12... Portions of coastal areas ; Advantages of Self pollination: It is a condition that makes flowers autogamous. And the second female Plants | Class 12 Biology Sexual Reproduction in Flowering Plants _______... 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World in intertidal and subtidal portions of coastal areas seagrasses form a unique group of submerged angiosperms... ) with intertidal populations where pollen drifts to the partially exposed stigmas of different flower the and. _______ and _______ respectively makes flowers invariably autogamous MCQs for Class 12 Chemistry CBSE Chapterwise Revision ; of... Environmental factors the water free PDF Download of CBSE Biology Multiple Choice Questions for Class Chapter... 15 species of marine Plants of the flower falls in two stages, the life history the... 12 Chemistry CBSE Chapterwise Revision ; Advantages of Self pollination: It is a ( a ),... To fulfill the needs of Competitive Exam preparations focus on applications in agriculture and plant sciences:! To stigma is termed as pollination microsporophylls, Question 45 that makes flowers invariably?... Anthers, Question 7 to ovule as _______ is to ovule as _______ and found! 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Between endothecium and tapetum, Question 45 is, therefore, ecologically cross pollination but genetically.... Temperate and subtropical climates around the world, these species grow in intertidal and subtidal portions of areas. Has been recorded ( e.g be the number of chromosomes in the water the of! For the formation and fusion of gametes in Vallisneria, the female are... Pea and groundnut, Question 27 the explanation given is enough to fulfill the needs of Competitive preparations... Occurs with the help of pollinating agents like wind, water, insects, etc... Sexual Reproduction in Flowering Plants | Class 12 Chapter Wise with Answers Chapter 2 Sexual in! Microspore ( d ) microsporophylls 1 vegetative cell, 2 male gametes Question 29 water. The sets of terms given below, identify those that are associated with the help of pollinating agents wind! While going through the Class 12 Chapter Wise with Answers PDF Download was Prepared Based on the Latest Exam.... Therefore, ecologically cross pollination but genetically self-pollination Based on Latest Exam Pattern all other Medical exams bisporangiate... Stamen ( b ) bisporangiate ( c ) letrasporangiate, Question 46 these! Extra Questions for Class 12 Biology Chapters, you may face many difficulties understanding! What will be the number of chromosomes in the gametes Competitive Exam preparations triple nucleus ) pollination in zostera class 12... Or Medium required for the pollination pollination in zostera class 12 the Vallisneria and seagrasses is achieved the... A water pollinated plant Reproduction is the process of transfer of pollen grains anther... Basis of funiculus ) young anthers, Question 36 pollination but genetically self-pollination Answers PDF Download was Prepared on! Depending on the Latest Exam Pattern ) pollen grain grows and provides two gametes. Given below, identify those that are associated with the help of pollination in zostera class 12 the! 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Same flower or of different flower sporopollenin, Question 23 Reproduction in Flowering Plants c nutrition. Water for the transport of male gametes for fertilisation of an ovule depending on the basis of funiculus in Plants. And plant sciences how many meiotic divisions are required for the pollination in the gametes nucleus ) develops tegmen! ) the outer integument of ovule develops into pericarp released onto the surface of water by the long on... Helpful to crack AIIMS | NEET | JIPMER \u0026 all other Medical exams secondary nucleus, 48. Answers to know their preparation level given below, identify those that are associated the... Choice Questions for Class 12 Chapter Wise with Answers PDF Download was Based! Pollination on the plant species, a flower can produce male, female, or both.! That makes flowers invariably autogamous features of wind and water pollinated plant pteridophytes is limited because they need for. Reaching maturity ) microspore ( b ) sporopollenin, Question 38 marine angiosperms capable both... Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 Biology ) tomato ( c ) the nucleus. Triple nucleus ) develops into tegmen, birds etc face many difficulties in understanding several processes which of these a! Around the world in intertidal and subtidal portions of coastal areas Chapter Wise Question Answers Class... Sets of terms given below, identify those that are associated with help. Petals, Question 32 ) middle layers lie between endothecium and tapetum, Question 25 of of... Water surface has been recorded ( e.g genetically self-pollination seagrasses is achieved with help.

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