POST UTME IMS U 2021 Biology | Objective

Are you preparing for POST UTME IMS U 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 eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
Correct C. Lipid synthesis and modification
D. Cell division

Correct Answer: C

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Question 2
A diagram of a plant's xylem and phloem is shown below. What is the primary function of the xylem?
Correct A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Cell signaling
D. Cell division

Correct Answer: A

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Question 3
In a e\cosystem, what is the term for the process by which dead organisms are broken down into simpler subs\tances?
A. Photosynthesis
B. Respiration
Correct C. Decomposition
D. Fermentation

Correct Answer: C

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Question 4
A diagram of the human eye is shown below. What is the primary function of the retina?
Correct A. Detection of light
B. Focu\sing of light
C. Transmission of signals
D. Production of tears

Correct Answer: A

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Question 5
What is the term for the process by which an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic drift
C. Natural selection
Correct D. Heritability

Correct Answer: D

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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. 0.2
B. 0.4
Correct C. 0.6
D. 0.8

Correct Answer: C

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Question 7
A 2.5 M solution of NaCl is diluted to 1 M. What is the new volume of the solution?
A. 2.5 L
Correct B. 5 L
C. 10 L
D. 20 L

Correct Answer: B

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Question 8
A plant has a root system with a radius of 5 cm and a height of 10 cm. If the plant is placed in a container with a radius of 10 cm, what is the new height of the plant?
A. 5 cm
B. 10 cm
Correct C. 15 cm
D. 20 cm

Correct Answer: C

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Question 9
A 50-g sample of a subs\tance is dissolved in 100 mL of water. What is the concentration of the solution in g/mL?
Correct A. 0.5 g/mL
B. 1 g/mL
C. 2 g/mL
D. 5 g/mL

Correct Answer: A

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Question 10
A population of E. coli has a mean generation time of 30 minutes. If the population is growing exponentially, what is the growth rate?
A. 0.02
B. 0.03
Correct C. 0.04
D. 0.05

Correct Answer: C

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Question 11
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 12
A researcher is studying the effect of temperature on the rate of photosynthesis in a plant. She measures the rate of photosynthesis at different temperatures and plots the data on a graph. Which of the following types of graphs would she most likely use?
A. Line graph
B. Bar graph
Correct C. Scatter plot
D. Pie chart

Correct Answer: C

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Question 13
A species of bird has a unique mating behavior where the male bird builds a complex nest and presents it to the female. The female then chooses the male with the most elaborate nest. What is the evolutionary pressure driving this behavior?
Correct A. Natural selection
B. Artificial selection
C. Genetic drift
D. Gene flow

Correct Answer: A

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Question 14
A researcher is studying the effect of pH on the growth of a microorganism. She measures the growth rate of the microorganism at different pH levels and plots the data on a graph. Which of the following types of graphs would she most likely use?
A. Line graph
B. Bar graph
Correct C. Scatter plot
D. Pie chart

Correct Answer: C

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Question 15
A species of plant has a unique adaptation where it can change its leaf shape in response to changes in light intensity. What is the name of this adaptation?
Correct A. Plasticity
B. Homeostasis
C. Heterochrony
D. Phenotypic variation

Correct Answer: A

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Question 16
In the context of cell division, what is the primary function of the mitotic spindle?
Correct A. To separate chromosomes during anaphase
B. To align chromosomes during prophase
C. To form the nuclear envelope during telophase
D. To condense chromosomes during prophase

Correct Answer: A

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Question 17
Which of the following types of tissue is primarily responsible for the production of digestive enzymes in the small intestine?
A. Stratified squamous epithelium
Correct B. Simple columnar epithelium
C. Stratified cuboidal epithelium
D. Simple cuboidal epithelium

Correct Answer: B

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Question 18
A diagram of the human brain is shown below. Identify the part labeled 'A'.
Correct A. Cerebrum
B. Cerebellum
C. Brainstem
D. Frontal lobe

Correct Answer: A

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Question 19
A plant cell is shown below. Identify the part labeled 'B'.
A. Cell membrane
Correct B. Cell wall
C. Nucleus
D. Chloroplast

Correct Answer: B

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Question 20
The process of photosynthesis occurs in which of the following parts of a plant?
A. Roots
B. Stem
Correct C. Leaves
D. Flowers

Correct Answer: C

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Question 21
In the xylem, what is the primary mechanism by which water and minerals are transported from the roots to the leaves?
Correct A. Transpiration pull
B. Root pressure
C. Capillary action
D. Osmosis

Correct Answer: A

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Question 22
What is the primary function of the excretory system in humans?
A. To regulate body temperature
Correct B. To remove waste products from the body
C. To maintain fluid balance
D. To produce hormones

Correct Answer: B

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Question 23
In the classification of living things, what is the primary criterion used to distinguish between prokaryotes and eukaryotes?
A. Cell shape
B. Cell size
Correct C. Presence of a true nucleus
D. Cell wall composition

Correct Answer: C

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Question 24
What is the primary mechanism by which genetic variation is introduced into a population?
Correct A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection

Correct Answer: A

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Question 25
What is the primary function of the circulatory system in humans?
Correct A. To transport oxygen and nutrients to cells
B. To remove waste products from the body
C. To regulate body temperature
D. To produce hormones

Correct Answer: A

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