BIOLOGY QUESTION NOW!

BIOLOGY QUESTION FOR WAEC 2012

                     SECTION A

1a> Explain briefly 4 factors that affect diffusion of substances. 
1b> Explain d following terms: i>active transport, ii>transpiration. 
1c> State 4 ways by which plants can reduce high rate of transpiration. 
1d> State d features of red blood cells and how the features adapt to d cells 2 perform its functi[Receiving Text]y how sugar level of mammalian blood can be regulated.

2a. describle briefly the role of the stomach in digestion 
2b i. Name three parts of plants in which food can be stored. 
2b ii. Give one exampl in each case. 
2b iii. Explain beriefly how the level of sugar in the mammalian blood can be regulated

                    SECTION B

7a).disease is a conditn dt occurs wen a body is not in normal state.it result frm d actn of sum organism either within or outside d host.pathogen r d organism ..7aii) symptoms:change in host temp,body pain,headache,fever,vomitin,tirednes nd fatigue. 7b) PHYSICAL BARIER i havin regular bath wit clean water ii kilin of pathogen carryin insents CHEMICAL BARIER i fumigatn of d environment ii use of anticeptic soaps nd cream on d body 7c) ANTIBODY:it protects d body against disease,it is produced by d body,it fights d antigen,ip prevents d introductn of oda disease in2 d body,dey neutralize poison produce by antigen,dey disintegrate antigen..ANTIGEN:it caures disease to d body,it enters in2 d body frm d environment,it destroys d antibody,it allows oda disease in2 d body,dey produce poison in2 d organism,dey form a coat for protectn. 7d) malaria-anopheles mosquitor,cholera-bacteria,AIDS-human imuno virus

                                                                     OBJECTIVE 1-60

1-10B,C,D,B,B,B,C,C,A,D.

11-20,A,A,D,C,B,A,A,A,B,C.

21-30,D,A,A,D,B,A,C,C,B,A 

31-40,A,C,D,B,C,A,C,CC,D.

41-50B,C,D,D,B,A,A,A,B,C.

51-60 C,A,B,B,C,B,A,D,A,C