iii) Contaminated syringes. iv) Infected mother to child. 4. What are the different methods of contraception? Ans.a)Barrier method: condoms used by males /vaginal diaphragm used by females. b)Chemical method: e.g oral pills /vaginal pills used by females c)Surgical method: vasectomy in /tubectomy in females 5.Sankalp is a student of class 10, who is very much neglected by his relatives. The reason for behavior was death of his parents after suffering from a disease called AIDS. He is Well taken care by his teachers and class mates. (VBQ) What values were shown by his teachers and classmates? Ans. Caring/ knowledge of biology. b) Will the disease called AIDS spread by sitting close to each other or by hand shaking with each other? Ans) No, the disease wont spread by hand shake. List two ways of transmission of the disease. Ans) )i) Sexual contact ii) Infected blood Long answer questions (5 mark) 1 . Explain the process of fertilization in plants with the help of neat labeled diagram Ans. Hints : Formation of pollen tube ,movement of male gametes towards the ovule. Fertilisation: Fusion of male and female gamete. Neat labelled diagram : fig 8.8 10. Describe the different methods of asexual reproduction seen in animals with the help of neat labelled diagrams. Ans.Description for the following: Fission : binary and multiple fission Regeneration Bud formation Fig :8.1,8.2,8.3,8.4
iii) Contaminated syringes. iv) Infected mother to child. 4. What are the different methods of contraception? Ans.a)Barrier method: condoms used by males /vaginal diaphragm used by females. b)Chemical method: e.g oral pills /vaginal pills used by females c)Surgical method: vasectomy in /tubectomy in females 5.Sankalp is a student of class 10, who is very much neglected by his relatives. The reason for behavior was death of his parents after suffering from a disease called AIDS. He is Well taken care by his teachers and class mates. (VBQ) What values were shown by his teachers and classmates? Ans. Caring/ knowledge of biology. b) Will the disease called AIDS spread by sitting close to each other or by hand shaking with each other? Ans) No, the disease wont spread by hand shake. List two ways of transmission of the disease. Ans) )i) Sexual contact ii) Infected blood Long answer questions (5 mark) 1 . Explain the process of fertilization in plants with the help of neat labeled diagram Ans. Hints : Formation of pollen tube ,movement of male gametes towards the ovule. Fertilisation: Fusion of male and female gamete. Neat labelled diagram : fig 8.8 10. Describe the different methods of asexual reproduction seen in animals with the help of neat labelled diagrams. Ans.Description for the following: Fission : binary and multiple fission Regeneration Bud formation Fig :8.1,8.2,8.3,8.4
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