POST UTME COVENANT UNIVERSITY 2025 Biology | Objective

Are you preparing for POST UTME COVENANT UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2025 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In a tropical rainforest, the primary consumers are primarily composed of
Correct A. herbivorous insects
B. omnivorous mammals
C. carnivorous birds
D. detritivorous fungi

Correct Answer: A

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Question 2
The process of cellular respiration in plants involves the breakdown of glu\cose to produce
Correct A. ATP and NADH
B. glu\cose and oxygen
C. carbon dioxide and water
D. ethanol and carbon dioxide

Correct Answer: A

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Question 3
The diagram below represents a cross-section of a plant root. Identify the part labeled A.
Correct A. root hair
B. cortex
C. xylem
D. phloem

Correct Answer: A

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Question 4
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant if
Correct A. the population is large and randomly mating
B. the population is small and randomly mating
C. the population is large and non-randomly mating
D. the population is small and non-randomly mating

Correct Answer: A

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Question 5
The diagram below represents a simple black and white chemistry apparatus showing a titration setup. Identify the part labeled A.
Correct A. burette
B. beaker
C. pipette
D. dropper

Correct Answer: A

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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'?
A. 0.36
Correct B. 0.64
C. 0.16
D. 0.44

Correct Answer: B

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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. 0.25
Correct B. 0.5
C. 0.75
D. 0.33

Correct Answer: B

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Question 8
A 2.5 g sample of a compound is dissolved in 25 mL of water. The molarity of the solution is 0.1 M. What is the molar mass of the compound?
A. 10000
Correct B. 25000
C. 50000
D. 75000

Correct Answer: B

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Question 9
A 10 mL sample of a solution containing 0.5 M NaOH is mixed with 20 mL of a solution containing 0.2 M HCl. What is the pH of the resulting solution?
A. 0
Correct B. 1
C. 2
D. 3

Correct Answer: B

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Question 10
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
Correct A. plasma membrane
B. cell wall
C. nucleus
D. mitochondria

Correct Answer: A

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Question 11
In a population of 1000 individuals, 200 are infected with a disease caused by a bacterium. The bacteria have a generation time of 2 hours and a doubling time of 1 hour. If the initial number of bacteria is 100, what is the expected number of bacteria after 5 hours?
A. 1000
B. 2000
Correct C. 4000
D. 8000

Correct Answer: C

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Question 12
A plant cell has a cell wall, a large central vacuole, and a small nucleus. Which of the following is NOT a characteristic of plant cells?
Correct A. Mitochondria
B. Chloroplasts
C. Cell wall
D. Vacuole

Correct Answer: A

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Question 13
A 2.0 L flask contains 0.50 M NaCl. If 0.10 M NaOH is added to the flask, what is the resulting concentration of NaCl?
A. 0.40 M
Correct B. 0.50 M
C. 0.60 M
D. 0.70 M

Correct Answer: B

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Question 14
A population of 1000 individuals has a birth rate of 0.05 and a death rate of 0.02. What is the expected population size after 10 years?
A. 1200
B. 1500
Correct C. 1800
D. 2000

Correct Answer: C

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Question 15
A 10.0 mL sample of 0.10 M HCl is added to a 20.0 mL sample of 0.20 M NaOH. What is the resulting concentration of NaCl?
A. 0.05 M
B. 0.10 M
Correct C. 0.15 M
D. 0.20 M

Correct Answer: C

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Question 16
In the context of evolutionary theory, what is the primary mechanism driving the adaptation of species to their environments?
Correct A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation

Correct Answer: A

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Question 17
A population of bacteria is growing exponentially in a nutrient-rich environment. If the initial population size is 100 cells and the growth rate is 2% per hour, what will be the population size after 5 hours?
A. 1000
B. 2000
Correct C. 5000
D. 10000

Correct Answer: C

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Question 18
A diagram of a plant cell is shown below. Identify the structure labeled 'A'.
Correct A. Nucleus
B. Mitochondria
C. Chloroplast
D. Vacuole

Correct Answer: A

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Question 19
A genetic cross is performed between two true-breeding lines of pea plants. One line has green pods and the other line has yellow pods. The offspring are 225 green and 75 yellow. What is the genotype of the parents?
Correct A. Pp x Pp
B. PP x pp
C. Pp x pp
D. PP x Pp

Correct Answer: A

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Question 20
A diagram of a human kidney is shown below. Identify the structure labeled 'B'.
A. Nephron
Correct B. Renal Pelvis
C. Ureter
D. Bladder

Correct Answer: B

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Question 21
In a typical human eye, the cornea and lens work together to focus light on the retina. However, in a condition known as cataract, the lens becomes cloudy and prevents light from pas\sing through. Which of the following best describes the effect of cataract on vision?
A. Near-sightedness
B. Far-sightedness
Correct C. Blindness
D. Double vision

Correct Answer: C

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Question 22
Asexual reproduction involves the production of offspring without the involvement of gametes. Which of the following organisms reproduces asexually?
Correct A. Bread mold
B. Fruit fly
C. Human
D. Bacteria

Correct Answer: A

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Question 23
In the human body, the circulatory system is responsible for transporting oxygen and nutrients to cells and removing waste products. Which of the following organs plays a crucial role in the circulatory system?
Correct A. Heart
B. Lungs
C. Liver
D. Kidneys

Correct Answer: A

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Question 24
The process of gas exchange in the human body occurs in the lungs, where oxygen from the air is transferred into the bloodstream and carbon dioxide is removed. Which of the following best describes the mechanism of gas exchange?
Correct A. Diffusion
B. Osmosis
C. Active transport
D. Passive transport

Correct Answer: A

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Question 25
In a typical e\cosystem, the producers (plants and algae) form the base of the food web. Which of the following best describes the role of producers in the e\cosystem?
A. Consumers
B. Decomposers
Correct C. Producers
D. Scavengers

Correct Answer: C

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