POST UTME SUMMIT UNIVERSITY 2019 Biology | Objective

Are you preparing for POST UTME SUMMIT UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2019 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
A population of 1000 individuals of a certain species is introduced to a new habitat. After 10 years, the population has increased to 5000. Assuming a geometric growth model, calculate the annual growth rate (r) if the initial population (P0) is 1000 and the final population (P10) is 5000.
A. 0.2
B. 0.3
Correct C. 0.4
D. 0.5

Correct Answer: C

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Question 2
A diagram of a plant cell is shown below. Identify the organelle labeled 'X'.
Correct A. lysosome
B. nucleus
C. mitochondria
D. chloroplast
E. vacuole

Correct Answer: A

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Question 3
A diagram of a simple harmonic motion is shown below. Calculate the angular frequency (ω) if the period (T) is 2 seconds and the amplitude (A) is 5 meters.
A. 1.57
Correct B. 3.14
C. 6.28
D. 9.42

Correct Answer: B

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Question 4
A diagram of a titration setup is shown below. Identify the subs\tance being titrated.
A. titrant
Correct B. analyte
C. pipette
D. burette
E. beaker

Correct Answer: B

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Question 5
A diagram of a simple circuit is shown below. Calculate the total resis\tance (R) if the resis\tances (r1 and r2) are 2 ohms and 3 ohms, respectively.
A. 5
Correct B. 6
C. 7
D. 8

Correct Answer: B

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Question 6
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'BB'?
Correct A. 0.16
B. 0.32
C. 0.36
D. 0.48

Correct Answer: A

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Question 7
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'RR'. What is the probability that the offspring will have the genotype 'Rr'?
A. 0.5
Correct B. 0.25
C. 0.75
D. 0.33

Correct Answer: B

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Question 8
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

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Question 9
A diagram of the human circulatory system is shown below. Which part of the system is responsible for transporting oxygenated blood from the lungs to the rest of the body?
A. Pulmonary Veins
Correct B. Aorta
C. Pulmonary Arteries
D. Coronary Arteries

Correct Answer: B

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Question 10
A diagram of the human respiratory system is shown below. Which part of the system is responsible for exchanging oxygen and carbon dioxide?
Correct A. Lungs
B. Trachea
C. Diaphragm
D. Bronchi

Correct Answer: A

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Question 11
In a population of 1000 individuals, the frequency of the dominant allele is 0.6. The frequency of the recessive allele is 0.4. What is the expected frequency of the heterozygous genotype?
A. 0.2
Correct B. 0.4
C. 0.6
D. 0.8

Correct Answer: B

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Question 12
A plant with the genotype AaBb is crossed with a plant with the genotype AaBb. What is the probability that the offspring will have the genotype AaBb?
A. 0.25
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 13
A population of 1000 individuals has a mean height of 170cm. If the s\tandard deviation is 10cm, what is the probability that an individual will have a height greater than 180cm?
A. 0.1
Correct B. 0.2
C. 0.3
D. 0.4

Correct Answer: B

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Question 14
A diagram of a plant cell is shown below. What is the function of the cell wall?
Correct A. to provide structural support
B. to regulate the movement of materials
C. to synthesize proteins
D. to store genetic information

Correct Answer: A

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Question 15
A diagram of a human eye is shown below. What is the function of the lens?
Correct A. to focus light on the retina
B. to regulate the amount of light entering the eye
C. to detect movement
D. to synthesize vision

Correct Answer: A

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Question 16
The process of binary fission in bacteria involves the replication of the bacterial chromosome and the subsequent division of the cell into two daughter cells. Which of the following is a characteristic of the replicated chromosome during binary fission?
A. The replicated chromosome is attached to the cell membrane.
B. The replicated chromosome is attached to the cell wall.
Correct C. The replicated chromosome is not attached to the cell membrane or cell wall.
D. The replicated chromosome is attached to the nucleoid.

Correct Answer: C

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Question 17
The classification of living organisms into kingdoms is based on the following characteristics. Which of the following is a characteristic of the kingdom Animalia?
Correct A. Multicellularity and heterotrophy.
B. Multicellularity and autotrophy.
C. Unicellularity and heterotrophy.
D. Unicellularity and autotrophy.

Correct Answer: A

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Question 18
The sense organ responsible for detecting changes in light intensity is the?
Correct A. Eye
B. Ear
C. Nose
D. Mouth

Correct Answer: A

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Question 19
The process of mitosis in eukaryotic cells involves the replication of the chromosomes and the subsequent division of the cell into two daughter cells. Which of the following is a characteristic of the replicated chromosomes during mitosis?
Correct A. The replicated chromosomes are attached to the spindle fibers.
B. The replicated chromosomes are not attached to the spindle fibers.
C. The replicated chromosomes are attached to the cell membrane.
D. The replicated chromosomes are attached to the cell wall.

Correct Answer: A

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Question 20
The process of meiosis in eukaryotic cells involves the replication of the chromosomes and the subsequent division of the cell into four daughter cells. Which of the following is a characteristic of the replicated chromosomes during meiosis?
A. The replicated chromosomes are attached to the spindle fibers.
Correct B. The replicated chromosomes are not attached to the spindle fibers.
C. The replicated chromosomes are attached to the cell membrane.
D. The replicated chromosomes are attached to the cell wall.

Correct Answer: B

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