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Biology
UTME / JAMB 2013
Adaptation & Evolution
Physiological adaptation to very dry conditions in animals demonstrates
A
rejuvenation
B
xeromorphism
C
hibernation
D
aestivation
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 #29861)
Biology
UTME / JAMB 2013
Adaptation & Evolution
One of adaptation of Cactus opuntia to conserve water is the reduction of
A
internodes
B
stem to leaves
C
leaves to spine
D
flower size
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 #29863)
Biology
UTME / JAMB 2013
Adaptation & Evolution
Which of the following structure is adapted for feeding in a bird of prey?
A
Hooked break and sharp claws
B
Smooth beak and strong claws
C
Big beaks and strong feet
D
Pointed beak and strong claws
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 #29864)
Biology
UTME / JAMB 2013
Cell Structure, Organization & Cell Division
The special pigment for colour change in chameleon is
A
melanin
B
carotenoid
C
chromatin
D
chromatophore
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 #29865)
Biology
UTME / JAMB 2013
Adaptation & Evolution
The behavioural adaptation in social insects could best be described as
A
symbiosis
B
saprophytism
C
parasitism
D
commensalisms
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 #29878)
Biology
UTME / JAMB 2013
Variety of Organisms & Classification of Living Things
Diagram
In the diagram, the structure labelled II is the
Attached Figure / Diagram
A
spermathecal pore
B
cocoon
C
clitellum
D
chaetea
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 #37253)
Biology
UTME / JAMB 2013
Basic Ecological Concepts, Ecosystems & Biomes
Diagram
The organism is found in soils rich in
Attached Figure / Diagram
A
mud
B
humus
C
clay
D
sand
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 #37254)
Biology
UTME / JAMB 2013
Basic Ecological Concepts, Ecosystems & Biomes
The organism is found in soils rich in
A
mud
B
humus
C
clay
D
sand
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: Official Exam / Past Question Archive
Chemistry
UTME / JAMB 2012
Kinetic Theory of Matter & Gas Laws
Solution
50 cm\(_3\) of gas was collected over water at 10ºC and 765 mm Hg. Calculate the volume of the gas at s.t.p. if the saturated vapour pressure of water at 10ºC is 5mm Hg
A
49.19 cm 3
B
48.87 cm 3
C
48.55 cm 3
D
48.23 cm 3
medium Difficulty
Verified Correct Answer: Option D
Chemical Principles & Mechanism
General Gas Equation:
\(\frac{P_1 V_1}{T_1}\) = \(\frac{P_2 V_2}{T_2}\)
where P\(_1\) = 765 - 5 = 760mmhg
\(V_2 = \frac{P_1 V_1 T_2}{P_2 T_1}\)
\(V_2 = \frac{760 * 50 * 273}{ 760 * 283}\) → 48.23cm\(^3\)
Source: WAEC / JAMB / NECO Classroom Archive (Record #27466)
Mathematics
UTME / JAMB 2012
Number Bases & Modular Arithmetic
Solution
Convert 112\(_6\) to a number in base three
A
2211
B
2121
C
1212
D
1122
medium Difficulty
Verified Correct Answer: Option D
Step-by-Step Mathematical Solution
First, convert to base 10
112\(_6\) = (1 x 6\(^2\)) + (1 x 6\(^1\)) + (2 x 6\(^0\))
= 36 + 6 + 2
= 44\(_{10}\)
\(\begin{array}{c|c} 3 & 44 \\ \hline 3 & 14 & r 2 \\ \hline 3 & 4 & r 2 \\ \hline 3 & 1 & r 1 \\ \hline 3 & 0 & r 1 \end{array}\)
Ans = 1122 = D
Source: Myschool Past Questions Archive (Record #27186)
Mathematics
UTME / JAMB 2012
Plane Geometry, Polygons & Circle Theorems
Solution
Simply \(\frac{2\frac{2}{3} \times 1\frac{1}{2}}{4\frac{4}{5}}\)
A
\(1\frac{1}{4}\)
B
\(1\frac{1}{6}\)
C
\(\frac{5}{6}\)
D
\(\frac{4}{5}\)
medium Difficulty
Verified Correct Answer: Option C
Step-by-Step Mathematical Solution
\(\frac{2\frac{2}{3} \times 1\frac{1}{2}}{4\frac{4}{5}}\)
\(\frac{8}{3} \times \frac{3}{2} \div \frac{24}{5}\)
\(\frac{8}{3} \times \frac{3}{2} \times \frac{5}{24}\)
\(\frac{5}{6}\)
Source: Myschool Past Questions Archive (Record #27189)
Mathematics
UTME / JAMB 2012
Fractions, Decimals, Percentages & Approximations
Solution
Evaluate \(\frac{21}{9}\) to 3 significant figures
A
2.30
B
2.31
C
2.32
D
2.33
medium Difficulty
Verified Correct Answer: Option D
Step-by-Step Mathematical Solution
\(\frac{21}{9} = \frac{7}{3}\)
= 2.33 (to 3 sig. figs)
Source: Myschool Past Questions Archive (Record #27190)
Mathematics
UTME / JAMB 2012
Fractions, Decimals, Percentages & Approximations
Solution
A man earns N3,500 per month out of which he spends 15% on his children's education. If he spends additional N1,950 on food, how much does he have left?
A
N525
B
N1,025
C
N1,950
D
N2,975
medium Difficulty
Verified Correct Answer: Option B
Step-by-Step Mathematical Solution
Amount spent on children = \(\frac{15}{100} \times 3500 = N525\)
Amount spent = Amount on children + Additional amount on food
Amount Spent = N525 + N1950 = N2475
Therefore amount left = N3,500 - N2,475 = N1,025
Source: Myschool Past Questions Archive (Record #27191)
Mathematics
UTME / JAMB 2012
Indices, Logarithms & Surds
Solution
If 27\(^{x + 2}\) \(\div\) 9\(^{x + 1}\) = 3\(^{2x}\), find x.
A
3
B
4
C
5
D
6
medium Difficulty
Verified Correct Answer: Option B
Step-by-Step Mathematical Solution
\(27^{x + 2} \div 9^{x + 1} = 3^{2x}\)
\(3^{3(x + 2)} \div 3^{2(x + 1)} = 3^{2x}\)
\(3^{3x + 6} \div 3^{2x + 2} = 3^{2x}\)
\(\therefore (3x + 6) - (2x + 2) = 2x\)
\(x + 4 = 2x \implies x = 4\)
Source: Myschool Past Questions Archive (Record #27192)
Mathematics
UTME / JAMB 2012
Indices, Logarithms & Surds
Solution
If log3x2 = -8, what is x?
A
\(\frac{1}{3}\)
B
\(\frac{1}{9}\)
C
\(\frac{1}{27}\)
D
\(\frac{1}{81}\)
medium Difficulty
Verified Correct Answer: Option D
Step-by-Step Mathematical Solution
log3x2 = -8
x2 = 3-8
x = \(3^{-8 \times \frac{1}{2}}\)
x = 3-4
x = \(\frac{1}{3^4}\)
x = \(\frac{1}{81}\)
Source: Myschool Past Questions Archive (Record #27194)