Copper-T prevents only implantation in the uterus. (ii)Multiple fission in Plasmodium. (i) Implantation: The embedding Question.27 Draw a longitudinal section of a flower and label the following parts: 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. Since the newly formed copy of DNA lacks an organised cellular structure, the cell gets divided to provide cell cover to the newly formed DNA. Regeneration is the ability of a fully differentiated organism to give rise to new individual organisms from its body parts. (ii) there are specific organs to do specific functions. Such a newborn cell will simply die. (iii) there is a labour division in the body of complex organisms. Four modes of asexual reproduction are—Binary fission in Amoeba, Fragmentation in Spirogyra, Regeneration in Planaria and Budding in Hydra. […] How can these be prevented? Answer. Answer. by mrscoffee. (ii) They secrete the hormone testosterone which regulates the formation of sperms and brings changes in appearance of boys at the time of puberty. All questions and answers from the Basic Science Book of Class 7 Science Chapter 12 are provided here for you for free. (i) Binary Fission in Amoeba. Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. What happens to human egg when it is not fertilised? 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. Reproduction is the process of producing new individuals of the same species The uterus prepares itself every month to receive and nurture the growing embryo. Book: National Council of Educational Research and Training (NCERT) (ii) The lining of uterus slowly breaks and comes out through the vagina as blood and mucous, if no fertilisation occurs. 3 years ago. SHORT ANSWER TYPE QUESTIONS][II] [3 Marks] – Year 2009. https://www.youtube.com/watch?v=nd-0HFd58P8. It is called vasectomy in males and tubectomy in females. (i) The breast size begin to increase, (ii) Menstruation starts. Give two differences. Answer. Methods of contraception are: Question.51 What is AIDS? Answer. Question.7 Name one sexually transmitted disease Answer. Solution: The … The embryo gets nutrition from the mother’s blood with the help of a special tissue called placenta. Answer. LONG ANSWER TYPE QUESTIONS [5 Marks] – Year 2010. Answer. Thus, two daughter cells are formed from the single cell as a result of the copying of DNA. (i) By having sexual contact with an infected person. (i) seminal vesicles, and (ii) prostate gland? favourable for spores to germinate and grow. Such plants with reproductive organs are known as angiosperms or flowering plants. (ii) Offsprings produced are identical. June 4, 2019. answer choices . 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. ... 14 Questions Show answers. (b) Two functions performed by testis it will not help in protecting her from sexually transmitted diseases. This is a disc which is embedded in the uterine wall and transfers glucose and oxygen from the mother to the embryo. (i) AIDS (ii) Genital warts (ii) Additional cellular apparatus by the cell involved in the process. Answer. Question.38 With the help of suitable diagrams, explain the various steps of budding in Hydra. Testis: Testes are oval shaped primary reproductive organs in men. Arrange the following terms in the correct development sequence: Pollen grain, sporogenous tissue, … Answer. Name the part of the cell where it is located. … AIDS is the Acquired Immune Deficiency Syndrome. (iii) where zygote is implanted Multiple Choice Questions with Answers to know their preparation level. Question.26 List any three differences between pollination and fertilisation. (a) E – Vagina. With a neat diagram, explain the 7-celled, 8 nucleate nature of female gametophyte. Answer. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern.