BECE 2010 Integrated Science Past Questions and Answers

Paper 1: Objectives

1. Water that forms lather readily with soap is said to be
   1. A. clean
   2. B. hard
   3. C. soapy
   4. D. soft
   Answer: D
2. Which of the following life activities are common to both plants and animals?
   
   I. Feeding
   
   II. Locomotion
   
   III. Respiration
   1. A. I and II only
   2. B. I and III only
   3. C. II and III only
   4. D. I, II and III
   Answer: B
3. A suitable instrument that could be used to measure the internal diameter of a bamboo flute is
   1. A. beam balance
   2. B. metre rule
   3. C. surveyor's tape
   4. D. vernier callipers
   Answer: D
4. The ability of soils to supply the right amounts of essential nutrients to plants is known as
   1. A. soil consistency
   2. B. soil fertility
   3. C. soil structure
   4. D. soil texture
   Answer: B
5. The simplest way of making well water suitable for laundry purpose is by
   1. A. adding alum
   2. B. boiling
   3. C. chlorination
   4. D. filtering
   Answer: D
6. Washing down of soil nutrients beyond the reach of roots of plants is referred to as
   1. A. aeration
   2. B. infiltration
   3. C. leaching
   4. D. percolation
   Answer: C
7. Which of the following statements explain(s) why an object floats in water? A floating object
   
   I. is less dense than water
   
   II. is denser than water
   
   III. has the same density as water
   1. A. I only
   2. B. II only
   3. C. III only
   4. D. I and III only
   Answer: A
8. An example of leafy vegetable crops is
   1. A. cucumber
   2. B. lettuce
   3. C. okro
   4. D. onion
   Answer: B
9. The structure in the respiratory system of humans where gaseous exchange occurs is
   1. A. alveolus
   2. B. bronchus
   3. C. nostril
   4. D. trachea
   Answer: A
10. The gas produced when glucose is oxidized during internal respiration is
    1. A. carbon (II) oxide
    2. B. carbon (IV) oxide
    3. C. hydrogen
    4. D. nitrogen
    Answer: B

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11. The farm animal which has crop as part of its digestive system is the
    1. A. fowl
    2. B. goat
    3. C. pig
    4. D. sheep
12. A beneficial effect of wind on the environment is
    1. A. promotion of photosynthesis in green plants
    2. B. pollination in flowering plants
    3. C. leaching in soils
    4. D. erosion in soils
13. The chemical solution that can be used to test for the presence of protein in food substances is
    1. A. Benedict's solution
    2. B. Fehling's solution
    3. C. Iodine solution
    4. D. Millon's reagent
14. Which of the following statements about bush fires is/are true?
    
    I. They cause air pollution
    
    II. They deplete vegetation cover
    
    III. They contribute to global warming
    1. A. I only
    2. B. II only
    3. C. II and III only
    4. D. I, II and III
15. The most effective method of controlling soil erosion on steep slopes is
    1. A. cover cropping
    2. B. mulching
    3. C. strip cropping
    4. D. terracing
16. Which of the following agencies is responsible for providing information on the weather and climate conditions of an area?
    1. A. Animal Husbandry Department
    2. B. Extension Services Department
    3. C. Information Services Department
    4. D. Meteorological Services Department
17. The farming system which involves the growing of one type of crop on the same piece of land every season is known as
    1. A. mixed cropping
    2. B. mixed farming
    3. C. monocropping
    4. D. monoculture
18. The fifth planet from the sun in the solar system is
    1. A. Jupiter
    2. B. Mars
    3. C. Neptune
    4. D. Venus
19. The process that takes place when the sperm and the egg of humans fuse together is referred to as
    1. A. fertilization
    2. B. menstruation
    3. C. ovulation
    4. D. reproduction
20. The process by which water vapour moves through the stomata of leaves into the atmosphere is known as
    1. A. absorption
    2. B. diffusion
    3. C. osmosis
    4. D. transpiration
21. An example of intensive system of poultry keeping is the
    1. A. Deep litter system
    2. B. Fold unit system
    3. C. Free range system
    4. D. Free-running system
22. The symbol represents
    1. A. A light emitting diode
    2. B. n-p-n transistor
    3. C. Light dependent resistor
    4. D. p-n-p transistor
23. The part of the diagram labelled I has
    1. A. More electrons than holes
    2. B. No holes
    3. C. More holes than electrons
    4. D. The same number of holes as electrons
24. A spot made on a white paper with a given food substance turned the spot on the paper translucent. The food substance is likely to contain
    1. A. Glucose
    2. B. Oil
    3. C. Protein
    4. D. Starch
25. Which of the following sources of energy is non-renewable?
    1. A. Sun
    2. B. Waves
    3. C. Wind
    4. D. Wood
26. Which of the following farm animals is/are housed in a hutch?
    
    I. Goats
    
    II. Pigs
    
    III. Rabbits
    1. A. I only
    2. B. III only
    3. C. I and II only
    4. D. II and III only
27. Which of the following blood vessels carries deoxygenated blood?
    1. A. Aorta
    2. B. Pulmonary artery
    3. C. Pulmonary vein
    4. D. Renal artery
28. The energy transformation that takes place in a car battery is
    1. A. Electrical energy → chemical energy → light energy
    2. B. Chemical energy → light energy → electrical energy
    3. C. Chemical energy → electrical energy → light energy
    4. D. Electrical energy → light energy → chemical energy
29. The type of liquid suitable to construct a thermometer to read temperatures of about 150°C is
    1. A. Alcohol
    2. B. Mercury
    3. C. Turpentine
    4. D. Water
30. Amino acids are the end-products of the digestion of
    1. A. Carbohydrates
    2. B. Fats
    3. C. Oils
    4. D. Proteins
31. The type of teeth used by mammals to eat food materials is
    1. A. Canine
    2. B. Incisor
    3. C. Molar
    4. D. Premolar
32. Fishponds are often stocked using
    1. A. Anchovies
    2. B. Fingerlings
    3. C. Fish eggs
    4. D. Frys
33. Which of the following processes result(s) in the formation of a new substance?
    
    I. Burning of wood
    
    II. Rusting of iron nail
    
    III. Heating water into vapour
    1. A. I only
    2. B. I and II only
    3. C. II and III only
    4. D. I, II and III
34. The use of resistance breeds of farm animals in controlling diseases is a
    1. A. Biological control method
    2. B. Chemical control method
    3. C. Cultural control method
    4. D. Physical control method
35. A load of 10 N is moved through a distance of 2 m. Calculate the work done.
    1. A. 5 J
    2. B. 10 J
    3. C. 20 J
    4. D. 50 J
36. Which of the following components of human blood is dissolved in the plasma?
    1. A. Mineral salts
    2. B. Phagocytes
    3. C. Platelets
    4. D. Red blood cells
37. An atom of carbon is represented as ¹²₆C. How many neutrons are in the nucleus of the carbon atom?
    1. A. 2
    2. B. 4
    3. C. 6
    4. D. 12
38. In agribusiness, middlemen operate within the
    1. A. Production chain
    2. B. Processing chain
    3. C. Supply chain
    4. D. Value chain
39. Which of the following illustrations shows the correct direction of the lines of force around a bar magnet?
    1. A.
    2. B.
    3. C.
    4. D.
40. The human sex cells are produced in the
    1. A. Scrotum and uterus
    2. B. Testis and ovary
    3. C. Penis and vagina
    4. D. Scrotum and ovary

Paper 2: Theory

1. (a) Study the laboratory diagram and answer the questions that follow:
   
   
   
   (i) What does the diagram represent?
   
   (ii) Identify the components labelled D, E, K and P.
   
   (iii) State one function of each of the parts labelled D, E, K and P.
   
   (iv) Mention the energy transformation that occurs in E when K is closed.
   
   (b) In an experiment, red and blue litmus papers were dipped separately into three test tubes each containing one of the test substances listed in the table below.
   
   

   Test substances	Observations: Red litmus paper	Observations: Blue litmus paper	Conclusion
   Lemon juice
   Calcium hydroxide solution
   Dilute hydrochloric acid

   
   
   (i) Copy and complete the table by making the necessary observation and conclusion for each substance.
   
   (ii) Name two test substances that react to produce salt and water.
   
   (iii) Write a balanced equation for the reaction in (ii).
   
   (c) Study the digestive system diagram and answer the questions that follow
   
   :
   
   (i) Name the parts labelled I, II, III, and IV.
   
   (ii) State one function each for parts V and VI.
   
   (iii) Name the part where protein digestion starts.
   
   (iv) Identify the parts where absorption, re-absorption of water, and egestion take place.
   
   (d) Identify and describe the farm tool in the diagram.
   
   
   
   (i) Identify the tool.
   
   (ii) State three uses of the tool.
   
   (iii) Mention three ways of maintaining the tool.
2. (a) (i) Define neutralization reaction.
   
   (ii) Write balanced equations for reactions between:
   
   (α) Sodium metal and dilute HCl
   
   (β) Sodium hydroxide and dilute HCl
   
   (b) Explain weaning in animal production.
   
   (c) (i) What is the Milky Way?
   
   (ii) State one use of artificial satellites.
   
   (d) (i) Define habitat.
   
   (ii) Give two examples of a habitat.
3. (a) (i) Define Pressure
   
   (ii) Why is it important to sharpen a knife?
   
   (b) (i) List differences between metals and non-metals.
   
   (ii) Define an alloy and state components of steel and brass.
   
   (c) List conditions for rearing tilapia.
   
   (d) Explain how a fish's streamlined body helps in water.
4. (a) (i) Define disease vector.
   
   (ii) Methods to control ectoparasites and endoparasites.
   
   (b) (i) Symptoms of nitrogen deficiency in tomatoes.
   
   (ii) Describe side dressing fertilizer application.
   
   (c) (i) Define power.
   
   (ii) State SI unit of power.
   
   (d) Draw potassium's electronic structure [Atomic number = 19].
5. (a) (i) Define respiration.
   
   (ii) Types of respiration in humans.
   
   (b) Methods to maintain soil fertility.
   
   (c) (i) Write systematic names for FeS, SO₂, CO₂.
   
   (ii) Reason for using copper, silver, and gold in jewelry.
   
   (d) (i) Define a fuse.
   
   (ii) Why use a fuse in a circuit?
6. (a) (i) Difference between unicellular and multicellular organisms.
   
   (ii) Why are vegetable crops important to humans?
   
   (b) (i) State elements of climate.
   
   (ii) Difference between climate and weather.
   
   (c) Advantages of staking in crop production.
   
   (d) Define corrosion and sublimation.

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