Bio S

KIKAAYA COLLEGE SCHOOL END OF TERM I EXAMS 2008 BIOLOGY S.2 DURATION: 1 ½ hours This paper consists of sections A and B. Attempt all questions at the end of the section In section B, answers are to be written in the spaces provided. SECTION A (20 marks) 1. Which of the following is the correct order in the organization of organisms? A. cells, organs, tissues, system B. Tissuess, organs, systems, cells C. Cells tissues, organs, system. D. Organs, tissues, systems, cells 2. Which organism does not fit well with the rest? A Dog B Frog C cockroach D Amoeba 3. A health worker advised people to do the following (i) Wash hands before eating (ii) Burn or bury all rubbish (iii) Cover all food (iv) Use toilets Which of the following diseases outbreaks was the worker mainly preventing? A. (I) and (ii) B. (ii) and (iii) C. (iii) and (v D. (ii) and (IV) 4. The following are structures of a cell (i) cell wall (ii) Nucleus (iii) Cell membrane (iv) Chloroplasts Which of them are found in both plant and animal cells? A (i) (ii) and (iv) B. (i) (iii) and (iv) C. (i) (iii) and (iv) D. bacteriology 5. Which of the following is not a branch of biology A. Embryology B. Nutrition C. Ecology D. bacteriology

6. Which of the following is not a difference between plants and animals? A. plants do not move while animals do B. plants make their own food while animals do not C. perennial plants grow continuously while animals don’t D. response 7. Which one of the following diseases is transmitted by anopheles mosquitoes? A. malaria B. yellow fever C. Trachoma D. Elephantiasis 8. Which of the following is the cause of malaria A. female anopheles mosquito B. Plasmodium D. House fly

C. All mosquitoes

9. To which group does the organism belong A. Insects B. plants C. Monera D. protists 10. To see cells clearly in a leaf, you have to magnify the cells by the following magnification. A. x100 X 20 C. X10 D.X 5 11. The following statements are characteristics of both plants and animal cells (i). Have thin cell membrane (ii) have cellutose cell walls (iii) Both of them make their own food (iv) Both have nucleus, cell membrane and mitochondrion (v) Both have nucleus, chloroplast A. (i) and (v)

B. (iv) only

C. V only

((i) (iv) and (v)

12. In classifying organisms, species, genus, class, order and phylum are used. What is a species? A. a population of many classes of organisms B. A population of organisms that depend on each other. C. A group of organisms that breed together successfully D. A group of living organisms in the same environment. 13. Which o f the following protozoa has cilia? A. Amoeba B. Paramecium C. Euglena

D. Plasmodium

14. Which of the following statements is incorrect about bacteria? A. They are plants B. They don’t contain chlorophyll C. They have no membrane bound organelles D. they have pseudopodia. 15. Which of the following statements is false? A. A group of cells performing one function is a tissue B. A group of tissues forms an organ C. A group of organs is an organism D. Yeast, bacteria, amoeba consist of single cells. 16. In the classification of living things the immediate subdivision of a class is A. Genus B. family C. order D. Phylum 17. The following are insects except A. Frog B. Cockroach C. mosquito

D. Praying mantis

18. A habitat is A. An area surrounding an organism B. Locality most frequented by organisms C. A place where a plant or animal gets food D. A locality in which an organism successfully survives. 19. Magnification can be defined as A. Dimensions of drawing B. Length of object Dimension of object length of image C. Dimensions of object Dimensions of drawing

D. Width of object width of image

20. The image formed in a microscope is A. larger than that formed in a hand lens B. Smaller than that formed in a hand lens C. Same size D. Real SECTION B 21. (a) What is Biology

(b) Give five branches of biology and define what they involve.

22. Study the diagram below and answer questions that follow

(a) Name parts labeled a- d A C

B D

(b) Give the name of the organism

(c) Give functions of the named parts A B C D (d) How does the organism survive harsh conditions?

SECTION C 23. (a) What is a cell? (b) Give the types of cells (c) Specialization of cells is where cells get adopted to perform particular functions. Give the functions of the following cells and where they can be found. (i) Ciliated cell (ii) White blood cell (iii) Red blood cell END