WAEC 2022 Biology | Practical

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Question 1 View Details
Study specimens A and C and answer questions 1(a) to 1(e)
Question Parts
(a)
Classify specimens A and C based on their life cycle.
(b)
State four observable differences between specimens A and C.
(c)
State three ways by which the damage to specimen A could have been prevented.
(d)
Name the type of germination that would be observed when specimens A and C are planted.
(e)
Place a flat side of specimen C on the tile. Using the razor blade/scalpel/knife provided, cut through the specimen longitudinally.
(i)
Make a drawing, \( 6\text{ }cm \) to \( 8\text{ }cm \) long of the cut surface of one half of specimen \( C \) and label fully.
(ii)
Add a drop of iodine solution to the cut surface of the other half of specimen \( C \) and record the activity on the table below.\(\begin{array}{|l|l|l|} \hline \text{Test} & \text{Observation} & \text{Inference} \\ \hline & & \\ \hline \end{array}\)
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Question 2 View Details
Study specimens D and E and answer questions 2(a) and 2(b).
Question Parts
(a)
(i) Name the specific habitats of each of specimens D and E.
(ii)
State five observable structural differences between specimens D and E.
(iii)
What is the behavioural adaptation that specimens D and E exhibit?
(b)
State two ways by which specimen E is of economic importance. Study specimen G and answer questions 2(c) to 2(e).
(c)
On the table below, name the types of teeth present in specimen $G$ and state one function each of the types of teeth named. \(\begin{array}{|l|l|} \hline \text{Types of teeth} & \text{One function} \\ \hline & \\ \hline & \\ \hline \end{array}\)
(d)
(i) Name the mode of feeding of the organism from which specimen G was obtained.
(ii)
State three ways by which specimen G adapts its organism to the mode of feeding stated in 2d(i).
(e)
Name two mineral elements which are needed for the proper functions of specimen G in the body.
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Question 3 View Details
Study specimens H, K, L and M and answer questions 3(a) to 3(f).
Question Parts
(a)
State two observable structural differences between:(i) specimens H and L. (ii) specimens K and M.
() specimens H and L;
() specimens K and M.
(b(i))
State two ways each by which specimens H and M adapt the organisms to their modes of life.
(b(ii))
Name two types of food that the organism that possesses specimen H feeds on.
(c)
Make a drawing, 8cm to 10cm long of specimen M and label fully.
(d)
Name one habitat of the organism that possesses specimen K.
(e)
Name one feeding habit of each of the organisms that possess specimens H and L.
(f)
State two observable similarities between specimens:(i) H and L;(ii) K and M.
() H and L;
() K and M.
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