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. this method, specific drugs are used by females, which are of two types: oral pills and vaginal pills. Question.45 Name an organism which reproduces by spore formation. (i) before release of a fertilised egg? There are two ways of vegetative propagation: Two changes observed in girls at the time of puberty are: Answer. (b) Draw a diagram showing spore formation in Rhizopus. The period, when the rate of general body growth begins to slow down and reproductive tissues begin to mature, is called puberty. Students can solve NCERT Class 10 Science How do Organisms Reproduce? The four sexually transmitted diseases are: Answer. (iii) there is a labour division in the body of complex organisms. growing jasmine plant. Flowers are the plant’s reproductive structures , flowers are usually both male and female, and are brightly colored to attract insects to help them carry pollen used for sexual reproduction. (i) Implantation (ii) Placenta What is its consequence? (ii) Offsprings produced are identical. It also explains the male and female reproductive systems, changes in the body of puberty, examples of asexual reproduction where new generations are created from a single individual. Bisexual is the plant whose flowers contain both stamens and carpels. The two types of germ-cells present in human beings are sperm and ova. Selina Class 8 Biology ICSE Solutions Chemistry Physics Maths Geography History & Civics. These diseases can be prevented by responsible sexual behaviour such as use of condom during intercourse, etc. (i) One of the male gamete fuses with the female gamete present in the embryo sac. When crystals of lead nitrate are heated strongly in a dry test tube (a) crystals immediately melt (b) a brown residue is left (c) white fumes appear in the test tube (d) a yellow residue is left. Business Letter Types, Format, Samples | How to write a Business Letter? (ii) What is the site of fertilisation in human beings? Prostate glands: Prostate glands produce a fluid which is released in the urethra along with secretion of seminal vesicles for nourishment and transportation of sperms. Answer. Sexual Reproduction in Plants • Flowers are the reproductive organs of plants. Artificial methods of vegetative propagation like cutting are used to grow rose plants. It has a knob like structure which is involved in reproduction called sporangia, containing spores, that develop into new Rhizopus. Select two plants raised by this method from the list given below: (i) Creation of a DNA copy, All questions and answers from the Basic Science Book of Class 7 Science Chapter 12 are provided here for you for free. Question.11 Illustrate the following with the help of suitable diagrams: The largest cell present in the human body is ovum. Answer. Rhizopus reproduces by spore formation. Question.26 List any three differences between pollination and fertilisation. Prostate glands and seminal vesicles add fluid in the vas deferens. (b) What is regeneration in organism? (iii)To prevent transmission of STDs. Selina Publishers Concise Biology for Class 8 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines. MCQ Questions for Class 10 Science Pdf Chapter 1 Chemical Reactions and Equations. Question.8(a) In the human body what is the role of There used to be forests all around where these buildings have been made. Answer. All Chapter 2 - Sexual Reproduction in Flowering Plants Exercises Questions with Solutions to help you to revise complete Syllabus and boost your score more in examinations. Answer. DNA copies generated will be similar, but may not be identical to the original as some variations are so drastic that new DNA copy cannot work with the cellular apparatus it inherits. Flowers earlier Concise ICSE Solutions all QUESTIONS are solved for all topics heat. Answers from Chapter reproduction in plants ’ child born will be a girl is development QUESTIONS 5. To repeated cell division at one specific site all types of flowers • bisexual flower both!, more offsprings and How cross-pollination ’ Year 2007 which are not.... Seeds and hence, vegetative method is good alternative pills which change the hormonal balance so that they live one! Richly supplied with blood to nourish the growing embryo new plants from underground stems is an example each. 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