OBAFEMI AWOLOWO UNIVERSITY(OAU) 2006 POST-UTME PAST QUESTION(BIOLOGY)

OBAFEMI AWOLOWO UNIVERSITY(OAU)
2006 POST-UTME
BIOLOGY

1. A n amoeba moving towards a crumb of cake in a pond most likely exhibits
A. phototropism
B. chemotaxis
C. thermotaxis
D. nastic movement

2. W hich of the following is not present in the nucleus of a cell ?
A. chromosomes
B. nucleolus
C. mitochondrion
D. genes

3. W hich of the following cell would most probably contain the greatest number of golgi bodies
A. muscle cells
B. secretory cells
C. nerve cells
D. white blood cells

4. 6CO 2 + 6H 2 O sunlight C 6 H 12 O 6 + 6O 2
chlorophyll
The oxygen given off during the process in the above equation is derived from
A. sunlight
B. water
C. carbon dioxide
D. atmosphere

5. T he ventricles of the mammalian heaart are more muscular than the auricles because
A. auricles have smaller capacity
B. ventricles are larger in size
C. ventricles pump blood to distant organ
D. ventricles receive more blood

6. I n the adult toad, gaseous exchange takes place through
A. buccal, skin and spiracle
B. buccal cavity,bladder and lungs
C. buccal cavity, skin and lungs
D. gills, skin and buccal cavity

7. E ach of the following is an arthropod except
A. crab
B. scorpion
C. spider
D. snail

8. O ne of the following statement is not true of viruses
A. they are micro-organism
B. they are smaller than bacteria
C. they can be seen with an ordinary light microscope
D. they cause tobacco disease, polio and smallpox

9. T he largest phylum in the animal kingdom is
A. cnidaria
B. mollusca
C. chordate
D. arthropoda

10. O smosis can be defined as diffusion of
A. water molecules from an area of high concentration to an area of low concentration
B. water molecules from a dilute solution to a concentrated solution across a permeable membrane
C. water molecules from a concentrated solution to a dilute solution through a semi-permeable membrane
D. water molecules from a dilute solution to a concentrated solution through a semi permeable membrane

11. T he two species of human tape worm can be distinguished by the presence or absence of
A. Scolex
B. Hook
C. Head
D. sucker

12. T he brain and spinal cord constitute the
A. autonomic nervous system
B. sympathetic nervous system
C. somatic nervous system
D. central nervous system

13. W hich of the following statement is not correct about the function of each group of the mammalian vertebrate ?
A. caudal vertebrae supports the tail and provide attachement for tail muscle
B. thoracic vertebrae articulate with the ribs
C. lumber vertebrae provide attachement for abdominal muscle
D. sacral vertebrae supports the skull and allow nodding and rotating of movements

14. A group of similar cells performing the same function is
A. an enzyme
B. an organ
C. an tissue
D. an organelle

15. W hich of the following is not a means of conservation
A. replacing harvested mature timber trees with their seedlings
B. prevention of poaching
C. controlling excessive deforestation
D. burning of vegetation before cropping

16. W hich part of the ear is responsible for the maintenance of balance ?
A. cochlea
B. tympanic membrane
C. eustachian tube
D. semi-circular canals

17. W hich of the following parts of the mammalian brain is involved in taking decision to run rather than walk
A. cerebellum
B. medulla oblongata
C. midbrain
D. cerebrum

18. T he petals of a flower are collectively called
A. calyx
B. capsule
C. carpel
D. corolla

19. S tructures found in cells are listed below
i) cell wall ii) cell membrane iii) chloroplast iv) cytoplasm
v) nucleus vi) sap vacoule
Which of these structures are found in both plant and animal cells ?
A. i, ii and v
B. i, iii and v
C. ii, iii and v
D. ii, iv and v

20. T he foot of a bird strong and has strong claws on its digit . This implies that the bird
A. is a scavenger
B. is a bird of prey
C. uses foot to supplement wings action
D. uses foot to scratch the soil

21. A plant which grows on another plant without apparent harm to the host plant is called
A. a parasite
B. epiphyte
C. saprophyte
D. a predator

22. W hen testing a leaf for starch , why is it first placed in boiling water
A. to extract the chlorophyll
B. to remove colour from the leaves
C. to dissolve the starch
D. to stop chemical reaction

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