POST UTME MOUNTAIN TOP UNIVERSITY 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In a tropical rainforest e\cosystem, the primary producers are plants that undergo photosynthesis. What is the net equation for the photosynthetic process?
A. 6CO2 + 6H2O → C6H12O6 + 6O2
B. 6CO2 + 6H2O → C6H12O6 + 6H2O
C. 6CO2 + 6H2O → C6H12O6 + 6CO2
D. 6CO2 + 6H2O → C6H12O6 + 6H2O + 6O2
Question 2
A diagram of the human circulatory system is shown below. Which of the following is the correct description of the process of blood circulation?
A. The heart pumps blood through the arteries and veins.
B. The heart pumps blood through the arteries and the lungs.
C. The heart pumps blood through the veins and the liver.
D. The heart pumps blood through the arteries, veins, and the lungs.
Question 3
A cell membrane is selectively permeable because of the presence of what?
A. Pores
B. Channels
C. Transport proteins
D. Lipid bilayer
Question 4
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype?
A. 0.16
B. 0.32
C. 0.64
D. 0.8
Question 5
The diagram below shows the structure of a neuron. Identify the part labeled B.
A. D\endrite
B. Axon
C. Cell body
D. Myelin sheath
Question 6
A bio\logist is studying the classification of living things. She is trying to determine the kingdom of a particular organism. Which of the following characteristics would most likely place the organism in the kingdom Animalia?
A. It has a cell wall
B. It is multicellular
C. It has a nucleus
D. It is heterotrophic
Question 7
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
A. 200
B. 400
C. 600
D. 800
Question 8
In the context of evolutionary bio\logy, what is the primary mechanism driving the adaptation of populations to changing environments?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 9
The process of mitosis in a eukaryotic cell results in the production of:
A. 2 daughter cells with the same number of chromosomes as the parent cell
B. 4 daughter cells with half the number of chromosomes as the parent cell
C. 1 daughter cell with twice the number of chromosomes as the parent cell
D. No daughter cells are produced
Question 10
A 10-gram sample of a subs\tance is dissolved in 100 milliliters of water. If the molarity of the solution is 0.5 M, what is the molar mass of the subs\tance?
A. 20
B. 20
C. 20
D. 20
Question 11
A researcher is studying the effect of pH on the growth of Escherichia coli. The researcher measures the growth rate of the bacteria at different pH levels and plots the data on a graph. Which of the following types of graphs would be most appropriate for this data?
A. Bar graph
B. Line graph
C. Scatter plot
D. Histogram
Question 12
The gas exchange in a plant occurs through the following structure:
A. Roots
B. Stem
C. Leaves
D. Bark
Question 13
A cell undergoing mitosis has a DNA content of 2C. What is the stage of mitosis the cell is currently in?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 14
The xylem in a plant is responsible for:
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 energy for the plant through photosynthesis
D. Storing water and nutrients in the plant
Question 15
A patient is diagnosed with a bacterial infection caused by Staphylococcus aureus. The patient is treated with a course of antibiotics, but the infection persists. What is the likely cause of the persistent infection?
A. Antibiotic resis\tance
B. Bacterial virulence
C. Host immune system failure
D. Contamination of the treatment site

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