Reproduction - R eproduction HKALE 1989 Biology Paper 1 3...

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ReproductionHKALE 1989 Biology Paper 1HKALE 1989 Biology Paper 13.Distinguish between(b)binary fission and fragmentationANSHKALE 1989 Biology Paper 1HKALE 1989 Biology Paper 14.With the aid of graphs, relate the events of the hum n menstrual cycle to changes in hormone level.(8 marks)ANSHKALE 1990 Biology Paper 2HKALE 1990 Biology Paper 22.(a)Discuss how the sexual reproduction of-flowering plants is adapted to life on land.(5 marks)(b)Compare the advantages and disadvantages of sexual and vegetative (asexual) reproduction in flowering plants. (8 marks)(c)Describe and explain the characteristics of fruits adapted to :(i)wind dispersal(ii)animal dispersal (5 marks)(d)Explain why the dispersal of seeds is beneficial to a plant. (2 marks)ANS
HKALE 1991 Biology Paper 1HKALE 1991 Biology Paper 16.State FOURdifferences between the divisions of a somatic cell and of a germ cell to form daughter cells.(4 marks)ANSHKALE 1992 Biology Paper 1HKALE 1992 Biology Paper 17.The following organisms can reproduce sexually :AmoebaObeliabread mouldmoss(a)Describe briefly how new individuals arise asexually in each case.(b)What are the advantages of asexual reproduction over sexual reproduction ?(8 marks)ANSHKALE 1992 Biology Paper 3HKALE 1992 Biology Paper 313.Discuss recent medical advances in the treatment of human infertility.(20 marks)ANSHKALE 1993 Biology Paper 1HKALE 1993 Biology Paper 15.Outline the development of a dicotyledonous seed from a fertilized ovule.(6 marks)ANS
HKALE 1994 Biology Paper 1HKALE 1994 Biology Paper 12.Briefly describe twotypes of artificial vegetative propagation in flowering plants.(4 marks)ANSHKALE 1994 Biology Paper 1HKALE 1994 Biology Paper 13.Draw an annotated diagram of a sperm and show how its structure is related to its function.(6 marks)ANSHKALE 1994 Biology Paper 2HKALE 1994 Biology Paper 24.What are the requirements for sexual reproduction to be successful in flowering plants and mammals ? Discuss the significance of sexual reproduction in living organisms.(20 marks)ANSHKALE 1996 Biology Paper2HKALE 1996 Biology Paper21.(a)Compare and contrast the embryos of mammals and leguminous plants with respect to(i)their protection,(6 marks)(ii)the mechanisms leading to their separation from the parents at maturity.(7 marks)(b)Describe the interaction of the nervous and the hormonal systems in a mother's body which enables her to breast-feed her new-born baby.(7 marks)ANS
HKALE 1997 Biology Paper 1HKALE 1997 Biology Paper 19.The following graphs show the changes in the levels of hormones A, B, C and D in the plasma during one menstrual cycle of a healthy woman. The changing hormone levels also show the interaction of these four hormones which brings about events in the menstrual cycle.

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