The 2023 WASSCE Integrated Science paper is few days away. There is no time no waste. We have once again compiled likely/sample questions for this exams.
Question One
(a) (i) What is plant tissue culture?
(ii) State three advantages of propagating a plant by tissue culture.
(b) (i) Explain the term parturition as applied to animal production.
(ii) State three signs shown by an animal when parturition is about to occur.
(c) Draw and label a ray diagram to show how the image of a point object is seen in a plane mirror
(d) A piece of zinc metal was placed in a beaker containing dilute hydrochloric acid.
(i) write a balanced chemical equation for the reaction that took place.
(ii) If 10.4g of zinc was placed in the hydrochloric acid, determine the amount, in moles of hydrochloric acid, that would be required to react with the zinc completely. [zn = 65.4, h = 1, cl = 35.5]
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Question Two
a. Explain how each of the following actions cause loss of soil nutrients,
i. Continuous cropping.
ii. Drainage
iii. water.
b.i. Give the reason for using each of the following devices in house hold wiring.
a. Stabilizer.
b. Fuse.
c. . Sunlight
c. i. State in which way each of the following factors is important in germination.
ii. Explain the behavior of a p-n junction diode when it is forward biased
Question Three
a. What is meant by insanitary condition?
b. Give three effects of ecto- parasites on cattle.
c. . Define displacement.
d. Describe briefly how a standard solution of sodium hydroxide is prepared in the laboratory
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Carefully go through the questions as it is intended to give you what you are to expect in the final exams.