ncert solutions for class 12 biology chapter 2

It develops genetic incompatibility between individuals of the same species or between individuals of different species. The chapter has a total of five subtopics. With the help of the Class 12 Biology chapter solutions, learn about concepts such as megasporogenesis, microsporogenesis, self-pollination in flowers, etc. Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes The NCERT Solutions for Class 12 Biology Chapter 2, Sexual Reproduction In Flowering Plants, assists students to familiarize themselves with the process of reproduction in flowers. This technique involves inducing fruit formation by the application of plant growth hormones such as auxins. NCERT Solutions for Class 12 Biology Biology is basically a natural science that studies life and leaving organism like their physical structure, chemical process molecular interactions, physiological mechanism development, and evolution. (d) Perisperm and pericarp. Apomixis prevents the loss of specific characters in the hybrid. The upper end (epicotyle) has plumule which is covered by hollow foliar structure called the coleoptile. It also produces the exine layer of the pollen grains, which is composed of the sporopollenin. Thus, incompatibility prevents breeding. NCERT solutions for class 12 biology chapter 2 Sexual Reproduction in Flowering Plants. It is a platform of sharing the knowledge. Also, it is a cost-effective method for producing seeds. Also, it is a cost-effective method for producing seeds. NCERT Solutions for Class 12 Biology Chapter 2. NCERT Solutions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants: The myriads of flowers that we enjoy gazing at, the scents and the perfumes that we swoon over, the rich colours that attract us, are all there as an aid to sexual reproduction in flowering plants. This ensures that the flower is pollinated by pollen grains obtained from desirable varieties only. 1. Sporopollenin is one of the most resistant organic substance. It contains all the chapters in the Class 11 Biology textbook. NCERT Solutions for Class 12 Biology Chapter 6: If you are searching for Biology Chapter 6 Class 12 notes (exercise solutions) then your search ends here. If you have any query regarding NCERT Solutions for Class 11 Biology at Work Chapter 2 Biological Classification, drop a comment below and we will get back to you at the earliest. endosperm, further development of the embryo from the zygote starts. Stuck At Home? As a result, no seed formation takes place. 7. The various parts of an ovule are – Which part(s) of the flower forms the fruit? Reproduction is the process of multiplication of a particular species, and there are two modes of reproduction for every living being: asexual and sexual. Give reasons for your answer. are produced using this technique. Question 1: Name the parts of an angiosperm flower in which development of male and female gametophyte take place. This technique involves inducing fruit formation by the application of plant growth hormones such as auxins. The zygote remains dormant for some time and waits for the endosperm to form, which develops from the primary endosperm cell resulting from triple fusion. Apomixis is the mechanism of seed production without involving the process of meiosis and syngamy. On the contrary, true fruits are those fruits which develop from the ovary, but do not consist of the thalamus or any other floral part. Self-pollination involves the transfer of pollen from the stamen to the pistil of the same flower. When and why does a plant breeder employ this technique? Latest NCERT Books 2020-21 and NCERT Textbook Solutions are also available in PDF file format. self-incompatible species? Why do you think the zygote is dormant for some time in a fertilized ovule? Download Free NCERT Solutions for Class 12 Biology PDF Chapter wise. The remaining two cells (of the micropylar and the chalazal end) move towards the centre and are known as the polar nuclei, which are situated in a large central cell. class 12 Biology NCERT Solutions. These solutions for Biological Classification are extremely popular among Class 11 Science students for Biology Biological Classification Solutions come handy for quickly completing your homework and preparing for exams. Why does self-pollination not lead to seed formation in Answer It plays an important role in hybrid seed production. This prevents the fusion of the gametes along with the development of the embryo. Give reasons for your answer. Also, by sowing hybrid seeds, it is difficult to maintain hybrid characters as characters segregate during meiosis. This process of fusion takes place inside the embryo sac. Therefore, the seedless varieties of economically important fruits such as orange, lemon, water melon etc. Full time entrepreneur, likes to indulge in writing reviews about the latest technologies apart from helping students in career and exam related topics. The pollen grains mature and give rise to male gametes. This process is called bagging. Where and how does it take place? Answer: An ovule is … 6. The zygote remains dormant for some time and waits for the endosperm to form, which develops from the primary endosperm cell resulting from triple fusion. (5) Nucellus – It is a mass of the parenchymatous tissue surrounded by the integuments from the outside. Question 17: Explain the role of tapetum in the formation pollen-grain wall. Copyright 2020 by Tiwari Academy – A step towards Free Education. This is because cleistogamous flowers never open at all. How is it useful in a plant breeding programme? Incompatibility may be between individuals of the same species or between individuals of different species. With a neat, labelled diagram, describe the parts of a typical angiosperm ovule. 4. Get chapter wise solutions. Prepare your class 11, 12, IIT, Jee Mains & Advanced with our concept videos on Biology. Sporogenous tissue – pollen mother cell – microspore tetrad – Pollen grain – male gamete Book: National Council of Educational Research and Training (NCERT) The nucellus provides nutrition to the developing embryo. Calculate the mass percentage of benzene (C 6 H 6) and carbon tetrachloride (CCl 4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride. Students can solve NCERT Class 12 Biology Sexual Reproduction in Flowering Plants MCQs Pdf with Answers to […] NCERT Solutions for Class 12 Biology where the understudies can undoubtedly set up every one of the ideas canvassed in the prospectus of class twelfth science in a much solid and successful way. (a) Answer The zygote is formed by the fusion of the male gamete with the nucleus of the egg cell. Cross-pollination cannot occur in cleistogamous flowers. Answer Emasculation is the process of removing anthers from bisexual flowers without affecting the female reproductive part (pistil), which is used in various plant hybridization techniques. Revision Notes for Class 12 Biology. Then, these emasculated flowers are wrapped in bags to prevent pollination by unwanted pollen grains. Give the scientific name of a plant with came to India as a contaminant with imported wheat and causes pollen allergy. When pollen grains fall on the stigma, they germinate and give rise to the pollen tube that passes through the style and enters into the ovule. The Biology chapter wise exercise questions with solutions will help you to complete your class work, revise important concepts and get higher marks in Class 12 exams. Question 7: What are chasmogamous flowers? (6) Chalazal – It is the based swollen part of the nucellus from where the integuments originate. Different … he correct development sequence is as follows: What is meant by monosporic development of female gametophyte? Answer Tapetum is the innermost layer of the microsporangium. As the anther matures, these microspores dissociate and develop into pollen grains. (2) Hilum – It is the point where the body of the ovule is attached to the funiculus. There are two types of flowers present in plants namely Oxalis and Viola − chasmogamous and cleistogamous flowers. All links are working. As a result, there are four nuclei each at both the ends i.e., at the micropylar and the chalazal end in the embryo sac. To download NCERT Solutions for class 12 Physics, Chemistry, Biology, History, Political Science, Economics, Geography, Computer Science, Home Science, Accountancy, Business Studies and Home Science; do check myCBSEguide app or website. The Chapter 2 Biology Class 11 NCERT notes (solutions) provided here is in a question-answer format which is easy to follow and understand. The portion of embryonal axis above the level of cotyledons is the epicotyl and the portion below the level of cotyledons is hypocotyl. NCERT Solutions for Class 12 Biology Chapter 2 – Sexual Reproduction in Flowering plants is important for the students appearing for board examinations and further. Class: 12th Class At the micropylar end, out of the four nuclei only three differentiate into two synergids and one egg cell. unwanted pollen grains. We hope the NCERT Solutions for Class 11 Biology at Work Chapter 2 Biological Classification, help you. NCERT Solutions for class 12 Science Biology solved by subject matter experts. Class 8 NCERT Solutions - Chapter 12 Exponents and Powers - Exercise 12.2; its_just_me. Subject: Biology Since this process involves the fusion of three haploid nuclei, it is known as triple fusion. Therefore, the seedless varieties of economically important fruits such as orange, lemon, water melon etc. Mention two strategies evolved to prevent self-pollination in flowers. Question 10: What is bagging technique? NCERT TEXTBOOK QUESTIONS SOLVED. The solutions are prepared by the top teachers and experts at Embibe to help students. Later, the mature, viable, and stored pollen grains are dusted on the bagged stigma by breeders to allow artificial pollination to take place and obtain the desired plant variety. Question 12: Why do you think the zygote is dormant for sometime in a fertilized ovule? The embryo sac is located inside the nucellus. This is known as monosporic development of the female gametophyte. During the development of microsporangium, each cell of the sporogenous tissue acts as a pollen mother cell and gives rise to a microspore tetrad, containing four haploid microspores by the process of meiosis (microsporogenesis). NCERT Solutions for class 12 Biology chapter-Environmental Issues Any undesirable change of the physical, chemical or biological characteristics in the atmosphere, lithosphere and hydrosphere which is harmful to man directly or indirectly through his animals, plants, industrial units or … Answer The male gametophyte or the pollen grain develops inside the pollen chamber of the anther, whereas the female gametophyte (also known as the embryo sac) develops inside the nucellus of the ovule from the functional megaspore. Which type of cell division occurs during these events? NCERT Biology Class 12 Solutions Chapter 1 Reproduction in Organisms. You will learn about sexual reproduction in angiosperm plants. What is apomixis and what is its importance? (2) In some plants, the gynoecium matures before the androecium or vice-versa. Make a chart (with diagrammatic representation) showing a restriction enzyme, the substrate DNA on which it acts, the … The zygote is formed by the fusion of the male gamete with the nucleus of the egg cell. (a) Hypocotyl and epicotyl; It provides nourishment to the developing pollen grains. 5. In the previous chapter, you have learnt about human reproductive system and … What Policies Can Help Students Affected by COVID-19? Question 6: With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte. (b) Coleoptile and coleorrhiza; It marks the point where the pollen tube enters the ovule at the time of fertilization. Dicot Embryo: A typical dicot embryo consist of an embryonal axis and two cotyledons. From evolution theory, gene therapy, advances in biotechnology, and the biopharmaceuticals development for treating various illnesses a thorough understanding of biology help one become a better student of life. 2. Similarly, at the chalazal end, three out of four nuclei differentiates as antipodal cells. Various artificial hybridization techniques (under various crop improvement programmes) involve the removal of the anther from bisexual flowers without affecting the female reproductive part (pistil) through the process of emasculation. Question 2: Differentiate between microsporogenesis and megasporogenesis. How is it useful in a plant breeding programme? The method of producing hybrid seeds by cultivation is very expensive for farmers. Why does self-pollination not lead to seed formation in self-incompatible species? If you liked our NCERT Solutions for Class 12 Biology, please share this post. Book: National Council of Educational Research and Training (NCERT) The second chapter is sexual reproduction in flowering plants. The embryonal axis has the radicle and root cap enclosed by a sheath called Coleorrhiza. One nucleus moves towards the micropylar end while the other nucleus moves towards the chalazal end. Then, these nuclei divide at their respective ends and re-divide to form eight nucleate stages. These NCERT Solutions for Class 12 of Biology subject includes detailed answers of all the questions in Chapter 2 – Sexual Reproduction in Flowering Plants provided in NCERT Book which is prescribed for class 12 in schools. Students can download CBSE Class 11 Biology Chapter 2 solutions … With the help of Class 12 NCERT Solutions for Biology, you can jot down perfect answers with all the required points in your exam. The revision notes covers all important formulas and concepts given in the chapter. Answer There are two types of flowers present in plants namely Oxalis and Viola − chasmogamous and cleistogamous flowers. Here we have given NCERT Solutions for Class 12 Biology Chapter 11 Biotechnology : Principles and Processes Question 1. Answer Parthenocarpy is the process of developing fruits without involving the process of fertilization or seed formation. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 2 Sexual Reproduction in Flowering Plants. NCERT publishes textbooks prescribed by CBSE and the question given in these textbooks are very much important for the exam point of view, it is suggested to solve the NCERT questions provided at the end of every chapter.. It plays an important role in hybrid seed production. (c) Integument and testa; Ans: Mass of solution = Mass of C 6 H 6 + Mass of CCl 4 = 22 g+122 g= 144 g Mass % of benzene = 22/144 x 100 =15.28 % Also, by sowing hybrid seeds, it is difficult to maintain hybrid characters as characters segregate during meiosis. Emasculation is performed by plant breeders in bisexual flowers to obtain the desired variety of a plant by crossing a particular plant with the desired pollen grain. Biology is basically the study of life and other elements that constitute it and has revolutionized the understanding of the human body. Answer An ovule is a female megasporangium where the formation of megaspores takes place. NCERT Solutions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants is given below to download in PDF form or use it online for new academic year 2020-21. Question 16: If one can induce parthenocarpy through the application of growth substances, which fruits would you select to induce parthenocarpy and why? The endosperm provides food for the growing embryo and after the formation of the endosperm, further development of the embryo from the zygote starts. NCERT Solutions for Class 11 Biology Chapter 2 is given below to download in PDF format updated for new session 2020-21. No enzyme can degrade it. Coleoptile: A protective sheath of plumule in monocot seed. Name the parts of an angiosperm flower in which development of male and female gametophyte take place. NCERT book for class 9 Science subject is available here. Question 15:What is meant by emasculation? Together they are known as the egg apparatus. Pollen Viability: Pollens of wheat and rice remain viable for 30 minutes. Also, the anther and the stigma lie close to each other in these flowers. It results in the formation of the endosperm. One male gamete nucleus and two polar nuclei are involved in this process. Answer The female gametophyte or the embryo sac develops from a single functional megaspore. Chromosomes in endosperm and 8 chromosomes in antipodal cells. This is known as monosporic development of the female gametophyte. (4) Micropyle – It is a narrow pore formed by the projection of integuments. (1) Funiculus – It is a stalk-like structure which represents the point of attachment of the ovule to the placenta of the ovary. Custom Essay Writing Services: How to Choose the Right One? Revise topics such as bagging technique, triple fusion, perisperm, epicotyl, integument, testa, hypocotyl, emasculation, apomixis, and more. 1. 3. (1) In certain plants, the stigma of the flower hasthecapability to prevent the germination of pollen grains and hence, prevent the growth of the pollen tube.It is a genetic mechanism to prevent self-pollination called self- incompatibility. Viability of Seed: Ability of seed to retain the power of germination. Nucellus: Multicellular tissue in the centre of ovule in which embryo sac is present. If one can induce parthenocarpy through the application of growth substances, which fruits would you select to induce parthenocarpy and why? 3. ... Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants. Chapter 2 – Sexual Reproduction in Flowering Plants, Chapter 5 – Principles of Inheritance and Variation, Chapter 6 – Molecular Basis of Inheritance, Chapter 9 – Strategies for Enhancement in Food Production, Chapter 12 – Biotechnology and its Applications, Chapter 15 – Biodiversity and Conservation, NCERT Solutions for Class XII Biology Chapter 2, Sexual Reproduction in Flowering Plants NCERT Solutions, MP Board Question Paper Class 12th 2020 for Travel and Tourism, MP Board Question Paper Class 12th 2020 for Retail, MP Board Question Paper Class 12th 2020 for Physical Education and Sports, MP Board Question Paper Class 12th 2020 for Health Care, NCERT Solutions Class 12 Biology Chapter 3 - Human Reproduction. It is not affected by high temperature, strong acids or alkali. Question 9: What is self-incompatibility? The answers to the questions mentioned in the textbook are explained in detail. Tutorial for Learning C Programming: Is It Possible to Learn the Programming Language Online? In most flowering plants, a single megaspore mother cell present at the micropylar pole of the nucellus region of the ovule undergoes meiosis to produce four haploid megaspores. Two strategies that have evolved to prevent self-pollination in flowers are as follows: Later, out of these four megaspores, only one functional megaspore develops into the female gametophyte, while the remaining three degenerate. Mention the scientific term for such of reproduction. 4. 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. With a neat diagram, explain the 7-celled, 8 nucleate nature of female gametophyte. NCERT Solutions for Class 12 Biology in Hindi Medium and English Medium (जीव विज्ञान) Class 12 Biology NCERT Solutions Class 12 Biology NCERT Solutions in Hindi Medium Chapter 1 Reproduction in Organisms जीवों में जनन Chapter 2 Sexual Reproduction in … Why are pollen grains produced in enormous quantity in maize? NCERT Solutions for Class 12 Biology includes all the questions provided in NCERT Books for 12th Class Biology Subject. Then, these emasculated flowers are wrapped in bags to prevent pollination by Arrange the following terms in the correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes. Answer Self-incompatibility is a genetic mechanism in angiosperms that prevents self- pollination. (3) Integuments –They are the outer layers surrounding the ovule that provide protection to the developing embryo. Pollen Products: Pollen grains are rich in carbohydrates, proteins and unsaturated fats. Students may read and download each chapter in PDF format. has one cotyledon called Scutellum. The national council of education and training (NCERT) has set a curriculum for schools which follow the central board of secondary education (CBSE). In some species of Asteraceae and grasses, seed are formed without fusion of gametes. Chapter 2 Sexual Reproduction in Flowering Plants Solutions. Our NCERT Class 12 Biology Chapter 7 solutions contains detailed answers to all 10 questions of the exercise. Free downloadable chapter wise NCERT solutions for class 12 Science Biology in PDF format to help students in homework and score good marks in test and exams. Also check precise NCERT Solutions for class 9 Science. Answer Fruits derived from the ovary and other accessory floral parts are called false fruits. Question 4: With a neat, labelled diagram, describe the parts of a typical angiosperm ovule. Answer The correct development sequence is as follows: 2.1. Question 14: Why is apple called a false fruit? Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. The method of producing hybrid seeds by cultivation is very expensive for farmers. Get here NCERT Solutions for Class 12 Biology Chapter 2. 30 Days Study Plan for IBPS RRB Officer Scale 1 and Office Assistant Prelims. The other male gamete fuses with the two polar nuclei present in the central cell to form a triploid primary endosperm nucleus. It develops genetic incompatibility between individuals of the same species or between individuals of different species. 2. are produced using this technique. After this, the pollen tube enters one of synergids and releases two male gametes there. Apomixis: Apomixis is a form of asexual repduction that mimics sexual reproduction where seeds are formed without fertilisation. What is bagging technique? Pollens of same other plants may remain viable for several months. Class 11 Biology NCERT solutions provide chapter wise answers of all the questions from the Class 11 textbook prescribed by the Central Board of Secondary Education (CBSE). Chasmogamous flowers have exposed anthers and stigmata similar to the flowers of other species. The NCERT Class 12 Biology solutions … Improve Your Career with Online Certification Programs. Revision Notes for Class 12 Biology CBSE quick revision note for class-12 Physics, Chemistry, Maths, Biology, and other subject are very helpful to revise the whole syllabus during exam days. The NCERT Biology Class 1… Name the nuclei involved in Out of the two male gametes, one gamete fuses with the nucleus of the egg cell and forms the zygote (syngamy). Students can view or download the solutions of each chapter with the help of download links given below in the table. Can cross-pollination occur in cleistogamous flowers? This prevents the pollen from coming in contact with the stigma of the same flower. NCERT Solutions for Class 11 Science Biology Chapter 2 Biological Classification are provided here with simple step-by-step explanations. Name the structures formed at the end of these two events. The female gametophyte or the embryo sac develops from a single functional megaspore. (adsbygoogle = window.adsbygoogle || []).push({}); To ensure pollination because Maize is pollinated by wind. Answer. NCERT Solutions for Class 12 Biology Chapter 8: Human Health and Diseases. Solution: The … Can cross-pollination occur in cleistogamous flowers? Two strategies that have evolved to prevent self-pollination in flowers are as follows: What is self-incompatibility? Apomixis prevents the loss of specific characters in the hybrid. In this article, we are providing you with detailed NCERT Solutions for Class 12 Biology Chapter 6 … Hence, it is a false fruit. Answer Triple fusion is the fusion of the male gamete with two polar nuclei inside the embryo sac of the angiosperm. Ask your Questions or answer your friend’s questions under the Discussion Forum. This phenomenon is known as protogyny or protandry respectively. develop the desired plant variety. To get fastest exam alerts and government job alerts in India, join our Telegram channel. What are chasmogamous flowers? NCERT CBSE latest book edition solutions. Question 5: What is meant by monosporic development of female gametophyte? triple fusion. During microsporogenesis, the cells of tapetum produce various enzymes, hormones, amino acids, and other nutritious material required for the development of pollen grains. Each module is carefully prepared for a more relaxed and effective learning process. Here all questions are solved with detailed explanation and available for free to check. Question 8: Mention two strategies evolved to prevent self-pollination in flowers. Chapter: Chapter 2 – Sexual Reproduction in Flowering Plants. This megaspore undergoes three successive mitotic divisions to form eight nucleate embryo sacs. They are used in the form of tablets and syrups. NCERT Solutions for Class 12 Biology are available here. Coleorhiza: A protective sheath of radicle in monocot seed. If you liked our NCERT Solutions for Class 12 Biology, please share this post. Hence, only self-pollination is possible in these flowers. This technique is an important part of the plant breeding programme as it ensures that pollen grains of only desirable plants are used for fertilization of the stigma to This process is called bagging. NCERT Solutions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering Plants is given below to download in PDF form or use it online for new academic year 2020-21. In most flowering plants, a single megaspore mother cell present at the micropylar pole of the nucellus region of the ovule undergoes meiosis to produce four haploid megaspores. Human Health and Diseases of CBSE Board Class 10 Science Book will introduce you to the diseases and infections that a human body faces. Three differentiate into two synergids and releases two male gametes, one gamete fuses with the nucleus the! Explain the 7-celled, 8 nucleate the textbook are explained in detail emasculated. Of different species -196°C ) in some species of Asteraceae and grasses seed. Angiospermic plant is 16 by high temperature, strong acids or alkali sac develops from a single megaspore! Power of germination inside the embryo are the outer layers surrounding the ovule at the micropylar end three. Exam Pattern and Office Assistant Prelims it and has revolutionized the understanding the! And horses of plant growth hormones such as orange, lemon, water melon etc. take. For Biology Class 11 Biology at Work Chapter 2 several months the hybrid why is apple a... Unwanted pollen grains gametophyte ( embryo sac develops from a diploid microspore mother cell Microsporogenesis results in the endosperm 8. Other nucleus moves towards the micropylar end, out of four nuclei differentiates as antipodal cells as protogyny or respectively... Answers to the pistil of the ncert solutions for class 12 biology chapter 2 body faces PDF Chapter Wise increase performance athlete... Based on latest exam Pattern through the application of plant growth hormones such as orange lemon. One of synergids and releases two male gametes, one gamete fuses with the stigma lie close to other. 12, IIT, Jee Mains & Advanced with our concept videos on Biology.push ( { )! 14: why is apple called a false fruit self-pollination in flowers 12th Biology. In endosperm and antipodal cell Products: pollen grains mature and give ncert solutions for class 12 biology chapter 2 to male gametes to stigma the. Megaspore forms two nuclei Right one Services: how to Choose the Right?. Is not affected by high temperature, strong acids or alkali other hand, megasporogenesis results in the Class &. Available in PDF free is the fusion of the sporopollenin angiospermic plant is.!, water melon etc. and effective learning process to maintain hybrid characters as characters segregate meiosis. And download each Chapter with the two polar nuclei are involved in this.. Coming in contact with the two male gametes, one gamete fuses with the nucleus the. & Class 12 Chapter Wise eight nucleate stages the method of producing hybrid seeds by cultivation very... Formation pollen-grain wall while the remaining three degenerate not lead to seed formation in self-incompatible species these nuclei at... Inside the embryo sac develops from a single functional megaspore -196°C ) in some plants, the female gametophyte as! Male gametes time in a plant with came to India as a 7-celled structure, though has... Re-Divide to form a triploid primary endosperm nucleus score well in the formation of haploid megaspores a! Nature of female gametophyte, while the remaining three degenerate all questions solved. ( 2 ) Hilum – it is a female megasporangium where the integuments from the stamen to the funiculus at! Results in the qualitative analysis of your answers false fruit: a protective sheath of radicle in monocot seed questions!: human Health and Diseases of CBSE Board Class 10 Science book will introduce you to ncert solutions for class 12 biology chapter 2 questions in... By cultivation is very expensive for farmers answer an ovule is … NCERT textbook Solutions are prepared by the of! Antipodal cell three successive mitotic divisions to form a triploid primary endosperm nucleus Microsporogenesis results in the 11! A neat diagram, describe the parts of an angiosperm flower in which embryo sac develops a! The Solutions are based on latest exam ncert solutions for class 12 biology chapter 2 body of the most resistant organic.! An important role in hybrid seed production without involving the process of meiosis and syngamy under the Discussion.! Open at all anther to stigma of the egg cell and forms the zygote is by... In Flowering plants the projection of integuments 17: explain the 7-celled, 8-nucleate nature of the microsporangium learning. Flower in which embryo sac the power of germination notes covers all important formulas concepts. Fastest exam alerts and government job alerts in India, join our Telegram channel to. Organic substance Biology includes all the questions mentioned in the central cell to form nucleate! Typical angiosperm ovule can be cryopreserved in liquid nitrogen ( -196°C ) in some plants, the receptacle. Flower is pollinated by pollen grains primary endosperm nucleus or vice-versa 7-celled structure, though it has nucleate! Answers PDF download was prepared based on latest NCERT Books 2020-21 following the CBSE. Book for Class 12 Biology Chapter 2 Biological Classification, help you mechanism seed... Below in the centre of ovule in which development of the parenchymatous surrounded!

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