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Pre Kcse Joint Evaluation Examination-Biology Paper 1 Question Paper

Pre Kcse Joint Evaluation Examination-Biology Paper 1

Course:Secondary Level

Exam Year:2012

KEGOYE,IDELERI,BUGINA,GAVALAGI,MUKINGI(KIBUGAMU).KCSE.

ANSWER ALL QUESTIONS IN THE SPACES PROVIDED;
1.Distinguish between taxonomy and taxon (1 mk)
2.a)Ascaris Lumbricoides is an endoparasite living in the ileum of human beings while Tagetes Minuta is anotorious weed on our farms.Identify the generic parts of the organism mentioned. (1 mk)
b) Under which circumstances are two organisms considered to belong to the same species? (1 mk)
3.a)Show that you understand the terms below:-
¡)Attenuation (1 mk)
¡¡Antiserum (1 mk)
b)Of what transport importance are ostia to insects? (1 mk)
5.What are roles of the following of homones in nutrion?
¡) Cholecystokinin (1 mk)
¡¡)Gastrin (1 mk)
6.State reasons for the following biological phenomena:-
¡)Amature plant cell does not lose its shape after maximally loosing water.(1 mk)
¡¡)Amarine amoeba does not burst whem placed in fresh water. (1 mk)
¡¡¡)Avisking tubing containing liquid X and placed in aliquid Y neither increses or reduces in size. (1 mk)
7.a)Distinguish primary from secondary growth in flowering plants. (2 mks)
b)Name ahormone in members of the class insecta that facilitates the retention of youthfulness during metamophosis. (1 mk)
8.a)What is tropism? (1 mk)
b)Identify each of the tropisms described below:-
¡)A bean stem twines around amaize plant. (1 mk)
¡¡)Pollen tube growing towards the embryo sac. (1 mk)
9.State two functions of Deoxyribonuclei acid (2 mks)
10.a)Give one reason for Mendel's success in carrying out genetics experiments. (1 mk)
b)Name any two ways in which genetics has been applied to our every day life. (2 mks)
11.a)Distinguish movement from locomotion (2 mk)
b)There are three types of skeletons.Identify any two of them. (2 mk)
12.a)Describe two characteristics of apopulation (2 mks)
b)Distinguish autecology from synecology. (2 mks)
13.other than diffusion and transpiration,name two methods by which angiosperms excrete. (2 mks)
14.a)State the homeostatic role of insulin and glucagon hormones in the human body. (2 mks)
b)Explain homeostasis. (2 mks)
15.Nameee the cell organelles that perform the following fUnctions:- (3 mks)
¡)Synthesis of proteins
¡¡)Control vital processes in the cell.
¡¡¡)Controls materials entering and leaving the cell.
16.a)How are xylem vessels adapted to support? (1 mk)
b)Give the two roles of vascular bundles. (2 mks)
17.a)What is fossil? (1 mk)
b)State two limitations of fossil records. (2 mks)
18.Give three assumptions made when estimating population using capture-recapture method. (3 mks)

Pre Kcse Joint Evaluation Examination-Biology Paper 1 Question Paper

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