Answer. This device is copper-T placed safely inside the uterus by a doctor or nurse. List its any two different forms. Free Termination Letter Samples, Template | How to Write a Termination Letter? Answer. (i) By having sexual contact with an infected person. (i) Part that produces pollen grain. Question.2 Define the terms unisexual and bisexual giving one example of each. SHORT ANSWER TYPE QUESTION[I] [2 Marks] – Year 2010. (i) Implantation: The embedding Answer. NEET help on Whatsapp Chat. Answer. … MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. (i) before release of a fertilised egg? 10 Lines on My Classroom for Students and Children in English. Answer. If a sperm carrying X chromosome fertilises an egg which carries X chromosome, then the’ child born will be a girl. Get here NCERT Solutions for Class 12 Biology Chapter 2.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. SHORT ANSWER TYPE QUESTIONS [3 Marks] – Year 2007. Explore the important questions on Reproduction in Organisms for class 12 Biology along with the solutions for reference. Answer. (i) Implantation (ii) Placenta LONG ANSWER TYPE QUESTIONS [5 Marks] – Year 2008. On completion of 9 months, the child is born as a result of rhythmic contractions of the muscles in the uterus. Free Appraisal Letter Format, Samples, Tips | How to write an Appraisal Letter? Name a multicell-ular organism which reproduces by this method. In the world of science, we study both plant and animal life cycle. parents. Question.23 List any four reasons for vegetative propagation being practised in the growth of some type of plants. E.g., Hibiscus, mustard. (a) Answer. each caused due to bacterial infection and viral infection. SHORT ANSWER TYPE QUESTIONS [I] [2 Marks] – Year 2011. (i) Seminal vesicles produce seminal plasma which is in the form of fluid makes the transport of sperms smooth. It is the genetic material found in the chromosomes, which are present in the nucleus of a cell. NCERT Solutions for Class 10 Science Chapter 8 explains reproduction in various organisms. Access the answers to hundreds of Plant reproduction questions that are explained in a way that's easy for you to understand. Describe double fertilisation in plants. State two basic events in reproduction. Plant Reproduction. ICSE 8 Biology > Reproduction in Plants Question Papers Revision Notes Take Quizzes Solve Worksheets Select a Chapter from the menu to view the specific chapter It is because the chances of survival depend on the nature of variations and different individuals have different kinds of advantages. (i) Regeneration in Planaria. (i) Fertilisation is defined as the fusion of a male gamete (sperm) with a female gamete (an ovum or egg) to form a zygote during sexual reproduction. Question.25 Explain vegetative propagation with the help of two examples. Multiple Choice Questions with Answers. Answer. Q18: Can a unisexual flower be self-pollinated? Testis: Testes are oval shaped primary reproductive organs in men. Answer.DNA copying is an essential part of the process of reproduction because: SHORT ANSWER TYPE QUESTIONS [II] [3 Marks] – Year 2011. State a reason why a more complex organism cannot give rise to new individuals through this method. (ii) Better quality of the plants can be maintained by this method. (ii) Viral infection is AIDS (Acquired Immune Deficiency Syndrome). Question.39 (a) What is spore formation? If a sperm The entire NCERT textbook questions have been solved by best teachers for you. Reproduction in Flowering Plants MCQ (Multiple Choice Questions and Answers) Q1. (iii) Trichomoniasis (a) Types of Flowers • Bisexual flower: Both male and female reproductive parts are present. (ii) By the transfusion of blood from an infected person. The egg gets fertilised in the oviduct. Ureter It is the tube that carries urine from kidney to the urinary bladder. In vegetative propagation, new plants are obtained from the parts of old plants like stems, roots and leaves, without the help of any reproductive organ. Selina Concise ICSE Solutions for Class 8 Biology Chapter 2 Reproduction in Plants. REVIEW QUESTIONS sperm fuses with female gamete, i.e. Question.40 State one genetically different feature between sperms and eggs of humans. Unisexual is the plant whose flowers contain either stamens or carpels but not both. Bisexual is the plant whose flowers contain both stamens and carpels. Question.18 Name the largest cell present in the Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Question.8(a) In the human body what is the role of Answer. Answer. Use of condom for penis or for vagina as a mechanical barrier for the sperms to reach the egg. Flowers with both androecium and gynoecium are called 1. vas deferens: The sperms are carried by a long tube called vas deferens to organs called seminal vesicles where the sperms get nourishment and stored. this method, specific drugs are used by females, which are of two types: oral pills and vaginal pills. LONG ANSWER TYPE QUESTIONS [5 Marks] – Year 2012. Just like humans, even plants have reproductive organs that help them to produce fruits. growing jasmine plant. (a) Four reasons for adopting contra¬ceptive methods are: Question.46 “DNA copies generated during reproduction will be similar but may not be identical to the original.” Justify this statement. (i) Barrier Method: In this method, physical devices such as condoms, diaphragm and cervical caps are used. It has a knob like structure which is involved in reproduction called sporangia, containing spores, that develop into new Rhizopus. (i) It is a faster mode of reproduc-tion. The full form of DNA is deoxyribonucleic acid. This inbuilt tendency for variation during reproduction forms the basis of evolution. Question.34 Expand AIDS. Question.17 State what type of method is used for Answer. For example, a bacteria that can withstand heat will survive better in a heat wave, i.e. (ii) if no fertilisation occurs? Answer. (ii) Additional cellular apparatus by the cell involved in the process. Free PDF Download of CBSE Class 10 Science Chapter 8 How do Organisms Reproduce? Answer. SHORT ANSWER TYPE QUESTIONS [2 Marks] – Year 2008. LONG ANSWER TYPE QUESTIONS [5 Marks] – Year 2010. Thus, more offsprings and population with genetic variations will survive. (b) List two functions performed by testis in human beings. Explain in brief one measure for the prevention of AIDS. Question.35 (a) List any four reasons for adopting contraceptive methods. Sexual reproduction confers new characteristics on the offspring due to variation in DNA copying. (ii) DNA in daughter cells will be able to control the functioning of daughter cells. SHORT ANSWER TYPE QUESTIONS][II] [3 Marks] – Year 2009. Such plants with reproductive organs are known as angiosperms or flowering plants. (i) Vegetative propagation is a cheaper, easier and more rapid method of propagation in plants than growing plants from their seeds. The sex chromosome of human female is XX and hence, the egg always carries the X chromosome. E – Vagina. A sperm of human male carries either an X chromosome or one Y chromosome. List two changes observed in girls at the time of puberty. (ii) Fertilisation Answer. Log in, MCQ Questions for Class 10 Science with Answers. SHORT ANSWER TYPE QUESTIONS[II] [3 Marks] – Year 2012. Sexual Reproduction in Plants • Flowers are the reproductive organs of plants. Question.47 List two advantages of practising vegetative propagation in plants. Solution: The … A bud develops as an outgrowth in Hydra due to repeated cell division at one specific site. (b) Label pollen grain, male germ- cells, pollen tube and female germ-cell in the above diagram. Answer. Which one of the two confers new characteristics on the offsprings and how? Sexually transmitted disease caused due to MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. Question.42 How does growing embryo get nutrition from the mother’s blood? […] Mention the importance of DNA copying inreproduction. The flower which contain only one sex organ either stamen or carpel are called unisexual flower. Register online for Biology tuition on Vedantu.com to score more marks in your examination. Question.22 What are sexually transmitted diseases? Answer. The embryo gets nutrition from the mother’s blood with the help of a special tissue called placenta. Grafting: In this method of reproduction, two plants of closely related varieties are joined together so that they live as one plant. (iii)To prevent transmission of STDs. The sperm of human have either X or Y chromosome. We provide all important questions and answers from chapter Reproduction in Flowering Plants of Biology. Question.3 Differentiate between ‘self-pollination’ and ‘cross-pollination’. The production of new plants from underground stems is an example of _____ reproduction. Answer. (iv) regeneration is carried out by specialised cells which are not present in complex organisms. AIDS is transmitted by sexual contact with an infected person. With a neat diagram, explain the 7-celled, 8 nucleate nature of female gametophyte. Answer. Artificial methods of vegetative propagation like cutting are used to grow rose plants. (a) Amoeba is Binary fission. Get help with your Plant reproduction homework. Small cut or broken parts of the organism body grow or regenerate into separate individuals. Question.43 Define the term puberty. (iii) Implantation of zygote. of a fertilised mammalian egg (embryo) into the inner thick wall of the uterus (womb) where it will continue its development is called implantation. (i) that produces egg Plants raised by vegetative propa-gation can bear fruits and flowers earlier. (i) Formation of sperms takes place in testis. Answer. Amphimixis is development of an organism obtained through Apospory Apogamy Fusion of gametes Without fusion … The spores of the flowering plants are dispersed by wind because the spores are _____. Answer. The two basic events in reproduction are: Regeneration is the ability of a fully differentiated organism to give rise to new individual organisms from its body parts. AIDS stands for Acquired Immune Deficiency Syndrome. Rhizopus reproduces by spore formation. big and flat . Free PDF Download of CBSE Class 10 Science Chapter 8 How do Organisms Reproduce? VERY SHORT ANSWER TYPE QUESTIONS [1 Mark] – Year 2009. Reproduction in Plants Class 7 Science Extra Questions Long Answer Type Questions. Selina Publishers Concise Biology for Class 8 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines. June 4, 2019. You can also get complete NCERT solutions and Sample papers. (ii) Avoid sharing of needles. (iii) there is a labour division in the body of complex organisms. Question.14 Mention the mode of reproduction used by 1) Stigma (Top part,receive pollen grains from anther,sticky) 2) Style (Middle part,it is tube which connect stigma to ovary) 3) Ovary (Swollen part at the bottom,it makes ovules and store them,contain female gametes). Question.11 Illustrate the following with the help of suitable diagrams: List three conditions NCERT Solutions for Class 7 Science PDF free download, NCERT Solutions for Class 7 Science Chapter 12 Reproduction in Plants, to Study online or download free in PDF form. What is its consequence? The first fusion product gives rise to the zygote while the second one forms the endosperm. (ii) What is the site of fertilisation in human beings? Plant Reproduction Pollination DRAFT. (i) Cool place, (ii) Moist place and (iii) Dark place. Some of the worksheets below are Flower Structure and Reproduction Worksheet Answers Key, Learning about parts of plants, Flower structure and reproduction : Parts of the Flower, Plant Reproduction, Questions, …. (b) Draw a diagram showing spore formation in Rhizopus. In humans, there are two ureters, one attached to each kidney. Question.29 Write any two differences between binary fission and multiple fission in a tabular form as observed in cells of organisms. Question.19 What is regeneration? Stamens 4. 1(i) What is fertilisation? Answer. Free PDF download of Important Questions with Answers for CBSE Class 11 Biology Chapter 6 - Anatomy of Flowering Plants prepared by expert Biology teachers from latest edition of CBSE(NCERT) books. (iv) Part that develops into a fruit. The largest cell present in the human body is ovum. Describe regeneration in Planaria with the help of a suitable diagram. ... Rearrange the following events in the sequence in which they occur in the sexual reproduction of flowering plants: embryogenesis, fertilization, gametogenesis, pollination. The four sexually transmitted diseases are: CBSE Sample Papers for Class 10. (a) Natural Vegetative Propagation, and (ii) The site of fertilisation in human beings is in the fallopian tube of female reproductive system. (i) The breast size begin to increase, (ii) Menstruation starts. The process of two fusions occurring in the embryo sac is called double fertilisation. Answer. HIV stands for Human Immunodeficiency Virus. it will not help in protecting her from sexually transmitted diseases. SHORT ANSWER TYPE QUESTK)NS[II] [3 Marks] – Year 2008. Prostate glands and seminal vesicles add fluid in the vas deferens. Answer. (a) Role of placenta in the development of human embryo: A special tissue develops between the uterine wall and the embryo (foetus) called placenta, where exchange of nutrients, glucose and oxygen takes place. State one mode of transmission of this disease. Why? Directions: Read the passage and answer the questions given below: We see buildings all around us now, and the new ones are being constantly constructed. In this case, if the vas deferens in male is blocked, sperm transfer will be prevented and if the fallopian tube in the female is blocked, the egg will not be able to reach the uterus, thus fertilisation will not take place. Answer. Question.41 List two advantages of vegetative reproduction practised in case of an orange plant. (ii)To prevent unwanted preg¬nancy. Question 1. Answer. In this process, one copy each of replicated DNA will be passed to daughter cells. (ii) Placenta: It is a complex double-layered spongy vascular tissue in human female formed by the joint activity of maternal and foetal tissues in the wall of uterus that is meant for attachment, nourishment and waste disposal for the foetus. LONG ANSWER TYPE QUESTIONS [5 Marks] – Year 2011. The uterus prepares itself every month to receive and nurture the growing embryo. answer choices . The two types of germ-cells present in human beings are sperm and ova. State two advantages semen offers to the sperms. Such a newborn cell will simply die. Answer. Example: Papaya, Watermelon. ☛See also: Ch 8 - How do Organisms Reproduce? List any four modes of spreading AIDS. During fertilisation in plants, the following events take place: Question.4 What is the effect of DNA copying which is not perfectly accurate on the reproduction process? Question.9 Illustrate the following with the help of suitable diagrams: Its two types are: Asexual reproduction and Sexual reproduction. admin. (iv) Through the placenta from the mother to child during pregnancy. Complete Reproduction in Flowering Plants Class 10 Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out Class 10 lecture & lessons summary in the same course for Class 10 Syllabus. 10 Lines on My Favourite Game Badminton for Students and Children in English, 10 Lines on Mother Teresa for Students and Children in English, 10 Lines on MS Dhoni for Students and Children in English, 10 Lines on Mango Tree for Students and Children in English, 10 Lines on My Best Friend for Students and Children in English, 10 Lines on Jawaharlal Nehru for Students and Children in English. (iii) Through infected needles used for injection. The use of Intrauterine Contraceptive Devices (IUCDs) prevents implantation in the uterus. (b) If a woman is using a copper-T, (c) List two advantages for organisms Methods of contraception are: Question.51 What is AIDS? (i) Vegetative propagation is a cheaper, easier and more rapid method of propagation in plants than growing plants from their seeds. The sperm is structurally long with a tail. More complex organisms cannot give rise to new individuals through regeneration because: (i) To increase the gap between, two children. Students can solve NCERT Class 10 Science How do Organisms Reproduce? Answer. Answer. It is caused by a virus called Human Immunodeficiency Virus. Question.16 State the method used for growing rose Planaria can be cut into any number of pieces and each piece grows into a complete organism. Is AIDS an infectious disease? Played 858 times. Advantages of vegetative propagation are: Question.48 List the parts of human male reproductive system which contribute fluid to the semen. parents. Question.37 (a) What is fragmentation in organism? Therefore, there could be many other variations in the DNA copies that would not lead to such a drastic outcome. Thus, the surviving cells are similar but slightly different from each other. Question.28 (a) Explain the role of placenta in the Multiple Choice Questions with Answers. A – Oviduct or Fallopian tube; Question.49 Name the two types of germ-cells These diseases can be prevented by responsible sexual behaviour such as use of condom during intercourse, etc. Where has the land come from to build all these buildings? 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. If the egg is not fertilised, the thick and nourishing lining of the uterus breaks and comes out through vagina as blood and mucous. Answer. present in human beings. What happens to human egg when it is not fertilised? How can these be prevented? Question.24 Write the full form of DNA. (a) Fragmentation: Multicellular organisms with simple body organisation such as filamentous algae-Spirogyra breaks up into two or more small pieces or fragments upon maturation. Copper-T prevents only implantation in the uterus. Important Questions for Class 12 Biology Chapter-2- Sexual Reproduction in Flowering Plants. NEET Botany Anatomy of Flowering Plants questions & solutions with PDF and difficulty level. (i) Gonorrhoea (ii) Syphilis (ii) Variations may be introduced during DNA copying. Answer. Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 7 so that you can refer them as and when required. development of human embryo. (i) Creation of a DNA copy, 3 years ago. (b) Sexually transmitted diseases (STDs) transmitted by bacteria are: (c) Two advantages for organisms to reproduce themselves through spores are as follows: (i) DNA copying provides cellular apparatus in the daughter cells. Multiple Choice Questions with Answers to know their preparation level. This makes transportation of sperms easier and also provides nutrition to the sperms. This is a disc which is embedded in the uterine wall and transfers glucose and oxygen from the mother to the embryo. The fertilised egg, the zygote gets implanted in the lining of the uterus and starts dividing. How do they structurally differ from each other? Questions and Answers 1. Question.33 What does HIV stand for? (ii) Better quality of plants can be maintained by this method. CBSE Class 12 Biology Sexual Reproduction in Flowering Plants Question Bank. (a) Amoeba (b) Planaria. The portion of a plant that is grafted on the other plant is called scion, and the plant in which grafting is performed is called the stock. Answer. Thus, two daughter cells are formed from the single cell as a result of the copying of DNA. Explain its role in the process of reproduction of the cell. (b) The average duration of human pregnancy is 40 weeks or 280 days. These fragments grow into new individuals. (iii) Test blood for AIDS before transfusion. The flower which has both sex organs are … (b) The Rhizopus consists of fine thread-like projections called hyphae. Answer. It is called vasectomy in males and tubectomy in females. (iii) Part that is sticky to trap the pollen grain. Exam Pattern and each piece grows into a fruit pollen grain tube of female is XX hence. Daughter cells and give their names grain, male germ- cells, pollen tube and female flowers present. The students can solve NCERT Class 10 Science How do organisms Reproduce main whorls namely sepals, petals, and... And shape primary reproductive organs in men with Answers to know their level... Is embedded in the fallopian tube the Ovaries from releasing ovum into the fallopian tube the original. ” Justify,... 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