POST UTME IGBINEDION UNIVERSITY 2025 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 2025 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In the context of classification of living things, which of the following kingdoms is characterized by the presence of true branching and vascular tissues?
A. Animalia
Correct B. Plantae
C. Fungi
D. Protista

Correct Answer: B

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Question 2
A plant cell undergoes asexual reproduction by producing
A. seeds
Correct B. spores
C. buds
D. tubers

Correct Answer: B

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Question 3
The xylem tissue in plants is responsible for
Correct A. transporting water and minerals from the roots to the leaves
B. transporting sugars and amino acids from the leaves to the roots
C. producing auxins and cytokinins
D. regulating stomatal opening and clo\sing

Correct Answer: A

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Question 4
The nervous system of an organism is responsible for
A. regulating body temperature
B. controlling voluntary movements
Correct C. transmitting nerve impulses
D. producing hormones

Correct Answer: C

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Question 5
Photosynthesis occurs in the
A. roots
Correct B. leaves
C. stems
D. flowers

Correct Answer: B

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Question 6
In a xylem vessel, water and minerals are transported from the roots to the leaves through a process called
A. Transpiration
Correct B. Translocation
C. Osmosis
D. Diffusion

Correct Answer: B

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Question 7
The process by which plants convert light energy into chemical energy is called
Correct A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation

Correct Answer: A

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Question 8
The rate of diffusion of a subs\tance through a membrane is influenced by
A. Surface area of the membrane
B. Concentration gradient
C. Temperature
Correct D. All of the above

Correct Answer: D

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Question 9
The process by which an organism's cells become specialized to perform specific functions is called
Correct A. Differentiation
B. Mitosis
C. Meiosis
D. Osmosis

Correct Answer: A

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Question 10
The diagram below shows the structure of a plant cell. Identify the part labeled A
Correct A. Cell wall
B. Cytoplasm
C. Nucleus
D. Mitochondria

Correct Answer: A

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Question 11
The process of mitosis in plant cells is similar to that in animal cells, but with some key differences. Which of the following is NOT a characteristic of plant cell mitosis?
A. The presence of a cell plate
B. The absence of a cleavage furrow
C. The formation of a spindle apparatus
Correct D. The production of daughter cells with identical genetic makeup

Correct Answer: D

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Question 12
In the context of blood transport, which of the following is a characteristic of the erythrocyte?
A. It has a large surface area for gas exchange
Correct B. It has a biconcave disk shape
C. It has a nucleus
D. It has a large amount of hemoglobin

Correct Answer: B

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Question 13
The nervous system is responsible for transmitting signals between different parts of the body. Which of the following is NOT a type of neuron?
A. Sensory neuron
B. Motor neuron
C. Interneuron
Correct D. Photoreceptor

Correct Answer: D

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Question 14
The process of photosynthesis in plants involves the conversion of light energy into chemical energy. Which of the following is a byproduct of photosynthesis?
A. Oxygen
B. Carbon dioxide
C. Water
Correct D. Glu\cose

Correct Answer: D

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Question 15
The process of natural selection is a key mechanism of evolution. Which of the following is a characteristic of a population that is undergoing natural selection?
A. The population is homogeneous
B. The population is isolated
Correct C. The population is subject to environmental pressures
D. The population is in a state of genetic equilibrium

Correct Answer: C

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Question 16
In a population of 1000 individuals, 20% are heterozygous for a particular gene, while 10% are homozygous recessive. What is the frequency of the dominant allele?
Correct A. 0.2
B. 0.3
C. 0.4
D. 0.5

Correct Answer: A

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Question 17
A plant with the genotype AaBbCcc is crossed with a plant with the genotype AabbCC. What is the probability that the offspring will have the genotype AaBbCc?
A. 0.25
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 18
A population of bacteria is growing exponentially, with a growth rate of 20% per hour. If the initial population is 1000, what will be the population after 3 hours?
A. 1600
B. 2000
Correct C. 2500
D. 3000

Correct Answer: C

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Question 19
A 50g sample of a subs\tance is dissolved in 100ml of water. What is the concentration of the solution in g/L?
A. 0.5
Correct B. 1
C. 2
D. 5

Correct Answer: B

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Question 20
A plant with the genotype AaBbCcc is crossed with a plant with the genotype AabbCC. What is the probability that the offspring will have the genotype AaBbCc?
A. 0.25
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 21
In a population of 1000 individuals, 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 22
A 5-year-old child is diagnosed with a rare genetic disorder. The child's parents are both carriers of the recessive allele 'a'. What is the probability that the child will be affected by the disorder?
A. 0.25
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 23
A population of 1000 individuals has a mean height of 170 cm and a s\tandard deviation of 10 cm. What is the probability that a randomly selected individual will have a height between 160 cm and 180 cm?
A. 0.68
B. 0.84
Correct C. 0.95
D. 0.99

Correct Answer: C

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Question 24
A 2-year-old child is diagnosed with a rare genetic disorder. The child's parents are both carriers of the recessive allele 'a'. What is the probability that the child will be affected by the disorder?
A. 0.25
Correct B. 0.5
C. 0.75
D. 0.9

Correct Answer: B

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Question 25
A population of 1000 individuals has a mean height of 170 cm and a s\tandard deviation of 10 cm. What is the probability that a randomly selected individual will have a height between 160 cm and 180 cm?
A. 0.68
B. 0.84
Correct C. 0.95
D. 0.99

Correct Answer: C

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