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Biology
NECO SSCE 2004
Digestive System & Feeding Mechanisms
The enzyme ptyalin acts in the
A
large intestine
B
mouth
C
oesophagus
D
small intestine
E
stomach
medium Difficulty
Verified Correct Answer: Option B
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #42236)
Biology
NECO SSCE 2004
Basic Ecological Concepts, Ecosystems & Biomes
Solution
Maximum and minimum thermometer is used for measuring
A
atmospheric pressure
B
highest and lowest amount of rainfall in habitat
C
highest and lowest temperature of the day
D
light intensity
E
relative humidity
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
Maximum and Minimum thermometer is used to measure the temperature reached over a period of time, for example 24 hours. It is used to record the extremes of temperature at a location, for instance in meteorology and horticulture.
Source: Myschool Past Questions Archive (Record #42237)
Biology
NECO SSCE 2004
Reproduction in Plants & Animals
An ovary with ovules arranged along its walls is said to have ------------ placentation.
A
axile
B
central
C
free central
D
marginal
E
parietal
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #42238)
Biology
NECO SSCE 2004
Transport System in Plants & Animals
In which of the following blood vessels does exchange of materials occur
A
arteries
B
arterioles
C
capillaries
D
venules
E
veins
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #42239)
Biology
NECO SSCE 2004
Variety of Organisms & Classification of Living Things
All of these are vertebrates EXCEPT
A
lizard
B
rat
C
starfish
D
tilapia fish
E
toad
medium Difficulty
Verified Correct Answer: Option C
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #42240)
Biology
NECO SSCE 2004
Nutrition in Plants & Animals (Photosynthesis & Food Substances)
The function of the ribosomes is the
A
absorption of carbon dioxide from the air
B
control of all the vital activities of the cell
C
provision of energy for cellular activities
D
synthesis of secretory products
E
synthesis of proteins and enzymes
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #42241)
Biology
NECO SSCE 2004
Variation & Genetics (Heredity)
Which of the following is NOT a transmissible character?
A
dimple cheek
B
ability to roll tongue
C
colour blindness
D
sickle-cell anaemia
E
big muscles of a boxer
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #42242)
Biology
NECO SSCE 2004
Digestive System & Feeding Mechanisms
Cotton is an example of a/an crop.
A
fibre
B
food
C
latex
D
oil
E
cereal
medium Difficulty
Verified Correct Answer: Option A
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42243)
Biology
NECO SSCE 2004
Variety of Organisms & Classification of Living Things
Which of the following is NOT a type of finger print?
A
arch
B
compound
C
loop
D
simple
E
whorl
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #42244)
Biology
NECO SSCE 2004
Variety of Organisms & Classification of Living Things
In terms of evolutionary trend, which of these invertebrates evolved first?
A
Annelida
B
Arthropoda
C
Coelentrata
D
Platyhelminthes
E
Protozoa
medium Difficulty
Verified Correct Answer: Option E
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #42245)
Biology
NECO SSCE 2004
Variety of Organisms & Classification of Living Things
The tricuspid valve is located between the
A
left auricle and left ventricle
B
left and right auricles
C
right and left ventricles
D
right auricle and right ventricle
E
right auricle and left ventricle
medium Difficulty
Verified Correct Answer: Option D
Biological Concept & Syllabus Guide
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #42246)
Mathematics
UTME / JAMB 2004
Binary Operations, Matrices & Determinants
Solution
The inverse of the matrix \(\begin{pmatrix} 2 & 1 \\ 1 & 1 \end{pmatrix}\) is
A
\(\begin{pmatrix} 1 & -1 \\ -1 & 2 \end{pmatrix}\)
B
\(\begin{pmatrix} 1 & -1 \\ 1 & 2 \end{pmatrix}\)
C
\(\begin{pmatrix} 1 & 1 \\ 1 & 2 \end{pmatrix}\)
D
\(\begin{pmatrix} -1 & 1 \\ 1 & 2 \end{pmatrix}\)
medium Difficulty
Verified Correct Answer: Option A
Step-by-Step Mathematical Solution
To find the inverse of the matrix
\(A = \begin{pmatrix} 2 & 1 \\ 1 & 1 \end{pmatrix}\)
We can use the formula for the inverse of a \( 2 \times 2 \) matrix:
\(A^{-1} = \frac{1}{ad - bc} \begin{pmatrix} d & -b \\ -c & a \end{pmatrix}\)
where \( A = \begin{pmatrix} a & b \\ c & d \end{pmatrix} \).
Identify \( a, b, c, d \)}
In our matrix, we have:
\(a = 2, \quad b = 1, \quad c = 1, \quad d = 1\)
Calculate the determinant \( ad - bc \)
Calculating the determinant:
\(ad - bc = (2)(1) - (1)(1) = 2 - 1 = 1\)
Calculate the inverse:
Now substituting into the formula for the inverse:
\(A^{-1} = \frac{1}{1} \begin{pmatrix} 1 & -1 \\ -1 & 2 \end{pmatrix} = \begin{pmatrix} 1 & -1 \\ -1 & 2 \end{pmatrix}\)
Thus, the inverse of the matrix \( \begin{pmatrix} 2 & 1 \\ 1 & 1 \end{pmatrix} \) is \(\begin{pmatrix} 1 & -1 \\ -1 & 2 \end{pmatrix}\)
Source: Myschool Past Questions Archive (Record #72305)
Mathematics
UTME / JAMB 2004
Binary Operations, Matrices & Determinants
Solution
If P = \(\begin{pmatrix} 1 & 0 & -1 \\ 3 & 4 & 5 \\ -1 & 0 & 1 \end{pmatrix}\), then |P| is
A
-8
B
0
C
4
D
8
medium Difficulty
Verified Correct Answer: Option B
Step-by-Step Mathematical Solution
The determinant of the matrix
\(P = \begin{pmatrix} 1 & 0 & -1 \\ 3 & 4 & 5 \\ -1 & 0 & 1 \end{pmatrix}\)
is calculated as follows:
\(|P| = 1 \cdot (4 \cdot 1 - 5 \cdot 0) - 0 \cdot (3 \cdot 1 - 5 \cdot -1) + (-1) \cdot (3 \cdot 0 - 4 \cdot -1) = 4 - 0 - 4 = 0\)
Thus, the determinant of the matrix \( P \) is
\(|P| = 0\).
Source: Myschool Past Questions Archive (Record #72307)
Mathematics
UTME / JAMB 2004
Linear, Simultaneous & Quadratic Equations
Solution
Find the values of x where the curve y = x\(^3\) + 2x\(^2\) - 5x - 6 crosses the x - axis.
A
-2, -1, and 3
B
-2, 1 and -3
C
2, -1, and -3
D
2, 1, and 3
medium Difficulty
Verified Correct Answer: Option C
Step-by-Step Mathematical Solution
To find the values of \( x \) where the curve
\(y = x^3 + 2x^2 - 5x - 6\)
crosses the x-axis, we set \( y = 0 \):
\(x^3 + 2x^2 - 5x - 6 = 0\)
Testing for rational roots, we find that \( x = -1 \) is a root. Factoring the polynomial gives:
\(x^3 + 2x^2 - 5x - 6 = (x + 1)(x^2 + x - 6)\)
Solving the quadratic \( x^2 + x - 6 = 0 \) using the quadratic formula yields:
\(x = \frac{-1 \pm \sqrt{1^2 - 4 \cdot 1 \cdot -6}}{2 \cdot 1} = \frac{-1 \pm 5}{2}\)
Thus, the solutions are:
\(x = -1, \quad x = 2, \quad x = -3\)
Therefore, the values of \( x \) where the curve crosses the x-axis are \(x = -1, \quad x = 2, \quad x = -3\).
Source: Myschool Past Questions Archive (Record #72310)
Mathematics
UTME / JAMB 2004
Number Bases & Modular Arithmetic
Diagram
Solution
Find x and y, respectively, in the subtraction above carried out in base 5.
Attached Figure / Diagram
A
2, 4
B
3, 2
C
4, 2
D
4, 3
medium Difficulty
Verified Correct Answer: Option C
Step-by-Step Mathematical Solution
x = 4 and y = 2
Source: Myschool Past Questions Archive (Record #72311)