POST UTME IGBINEDION UNIVERSITY 2021 Biology | Objective

Are you preparing for POST UTME IGBINEDION UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2021 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'A'?
Correct A. 0.8
B. 0.6
C. 0.4
D. 0.2

Correct Answer: A

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Question 2
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 3
In a cell undergoing mitosis, the chromosomes are duplicated and attached to the spindle fibers. What is the stage of mitosis at which the chromosomes are most condensed?
A. Prophase
Correct B. Metaphase
C. Anaphase
D. Telophase

Correct Answer: B

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Question 4
A diagram of the human brain is shown below. Which part of the brain is responsible for controlling voluntary movements?
Correct A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal Cord

Correct Answer: A

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Question 5
A diagram of the cell cycle is shown below. Which stage of the cell cycle is characterized by the synthesis of new DNA?
A. G1
Correct B. S
C. G2
D. M

Correct Answer: B

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Question 6
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
Correct A. 0.64
B. 0.36
C. 0.16
D. 0.44

Correct Answer: A

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Question 7
A cell undergoing mitosis has a DNA content of 2C. If the cell is in the prophase stage, what is the next stage it will enter?
A. Metaphase
Correct B. Anaphase
C. Telophase
D. Cytokinesis

Correct Answer: B

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Question 8
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
A. 20 μmol CO2 s-1
Correct B. 40 μmol CO2 s-1
C. 80 μmol CO2 s-1
D. 100 μmol CO2 s-1

Correct Answer: B

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Question 9
A 2.0 g sample of a subs\tance is digested with 10 mL of 2 M HCl. If the resulting solution has a pH of 1.5, what is the concentration of the subs\tance?
A. 0.1 M
B. 0.2 M
Correct C. 0.5 M
D. 1.0 M

Correct Answer: C

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Question 10
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Cell wall
Correct B. Plasma membrane
C. Vacuole
D. Chloroplast

Correct Answer: B

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Question 11
In a population of 1000 individuals, the frequency of the dominant allele is 0.6. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the recessive allele?
Correct A. 0.4
B. 0.2
C. 0.8
D. 0.1

Correct Answer: A

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Question 12
A researcher isolates a microorganism that exhibits both aerobic and anaerobic respiration. What is the most likely type of microorganism?
A. Bacteria
Correct B. Yeast
C. Mold
D. Fungus

Correct Answer: B

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Question 13
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
Correct A. Photosynthesis
B. Respiration
C. Cell division
D. Cell signaling

Correct Answer: A

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Question 14
A species of bird has a wing span of 2.5 meters. If the bird flies at a speed of 50 km/h, what is its average velocity?
Correct A. 25 m/s
B. 50 m/s
C. 75 m/s
D. 100 m/s

Correct Answer: A

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Question 15
A diagram of a circuit is shown below. What is the value of the current flowing through the circuit?
A. 2 A
Correct B. 4 A
C. 6 A
D. 8 A

Correct Answer: B

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Question 16
In a tropical rainforest e\cosystem, what is the primary role of the leaf's cuticle in relation to water loss?
A. To prevent water loss through transpiration
B. To facilitate water uptake from the soil
Correct C. To regulate stomatal opening and clo\sing
D. To absorb light for photosynthesis

Correct Answer: C

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Question 17
A cell is placed in a hypotonic solution. What will happen to the cell's volume?
A. The cell will shrink
Correct B. The cell will swell
C. The cell will remain unchanged
D. The cell will burst

Correct Answer: B

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Question 18
What is the function of the Golgi apparatus in a cell?
A. To synthesize proteins
Correct B. To modify and package proteins
C. To transport materials within the cell
D. To degrade cellular waste

Correct Answer: B

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Question 19
A plant is placed in a solution with a high concentration of salt. What will happen to the plant's roots?
A. The roots will grow longer
Correct B. The roots will grow shorter
C. The roots will remain unchanged
D. The roots will die

Correct Answer: B

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Question 20
What is the process by which plants release water vapor into the air?
A. Respiration
B. Photosynthesis
Correct C. Transpiration
D. Evaporation

Correct Answer: C

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Question 21
A study on the genetic variation of a population found that the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'A'?
Correct A. 0.6
B. 0.4
C. 0.8
D. 0.2

Correct Answer: A

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Question 22
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
Correct A. 40 μmol CO2 s-1
B. 20 μmol CO2 s-1
C. 10 μmol CO2 s-1
D. 5 μmol CO2 s-1

Correct Answer: A

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Question 23
A microorganism has a generation time of 2 hours. If the population size is 1000 cells at time t = 0, what is the population size at time t = 4 hours?
Correct A. 16000
B. 8000
C. 4000
D. 2000

Correct Answer: A

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Question 24
A diagram of a cell is shown below. Which of the following organelles is responsible for protein synthesis?
A. Nucleus
B. Mitochondria
Correct C. Ribosomes
D. Lysosomes

Correct Answer: C

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Question 25
A diagram of a cell cycle is shown below. Which of the following stages is characterized by DNA replication?
A. G1
Correct B. S
C. G2
D. M

Correct Answer: B

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