Question 3
WAEC
•
2025
•
BIOLOGY
•
practical
Answer the following questions based on the experiments conducted.
Question Parts
(
a
)
(i) Break specimen G and empty its content carefully into a beaker. Take 3 ml of the clear fluid into a test tube using the syringe provided. Add three drops of sodium hydroxide, followed by three drops of 1% copper sulphate solution into the mixture in the test tube. Shake the mixture and record the observation in the table below.
\(\begin{array}{|l|l|l|}
\hline
\text{test} & \text{observation} & \text{Inference} \\
\hline
& & \\
\hline
\end{array}\)
(ii) Name the test carried out (iii) Mention one other test that could give a positive result in the experiment. (iv) Name two other food substances that could give positive result in the experiment
(
b
)
Into specimen H, add 3 drops of sodium hydroxide followed by 3 drops of 1% copper sulphate solution. Shake the mixture and record the observation in the table below.
\(\begin{array}{|l|l|l|}
\hline
\text{test} & \text{observation} & \text{Inference} \\
\hline
& & \\
\hline
\end{array}\)
(
c
)
Complete the table below:
\(\begin{array}{|l|l|}
\hline
\text{Five observation parts of specimen J} & \text{One function of each of the part} \\
\hline
& \\
\hline
& \\
\hline
& \\
\hline
& \\
\hline
& \\
\hline
\end{array}\)
(
d
)
Name the: (i) Kingdom; (ii) Phylum; (iii) Class; of the organisms that produce specimen J.
(
e
)
State two ways by which specimen J is of economic importance to humans.
(
f
)
Name two habitats of the organisms that produce specimen J.
(
g
)
Give three examples of organisms that produce specimen J.
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About This Question
This is
Waec
2025
Biology
Question 3.
It is one of the
practical
questions from the
2025
Waec
Biology
examination.
The question covers
General
.