POST UTME MOUNTAIN TOP UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A scientist is studying the process of photosynthesis in a plant. Which of the following is a byproduct of photosynthesis?
A. Oxygen gas
B. Carbon dioxide gas
C. Water vapor
D. Nitrogen gas
Question 2
In a eukaryotic cell, the process of mitosis involves the division of the nucleus into two daughter nuclei, each containing the same number and kind of chromosomes as the parent nucleus. Which of the following stages of mitosis is responsible for the condensation of chromosomes?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 3
A plant cell has a cell wall made of cellulose, a plasma membrane, and a large central vacuole. What is the primary function of the cell wall?
A. To provide structural support
B. To regulate the movement of materials
C. To synthesize proteins
D. To store genetic information
Question 4
The type of genetic variation that occurs when there is a change in the number of chromosomes is called:
A. Mutation
B. Genetic drift
C. Gene flow
D. Polyploidy
Question 5
The human body's transport system is responsible for moving subs\tances throughout the body. Which of the following types of blood vessels is responsible for the exchange of oxygen and carbon dioxide between the blood and the tissues?
A. Arteries
B. Veins
C. Capillaries
D. Lymphatic vessels
Question 6
A diagram of a plant cell is shown below. Identify the part labeled 'X'.
A. A
B. B
C. C
D. D
Question 7
The process by which plants release water vapor into the air is called:
A. Transpiration
B. Respiration
C. Photosynthesis
D. Evaporation
Question 8
A population of Drosophila melanogaster is being studied for its genetic variation. The frequency of the recessive allele 'a' is 0.2. What is the expected frequency of the homozygous recessive genotype 'aa' in the population?
A. 0.04
B. 0.16
C. 0.36
D. 0.64
Question 9
The process by which plants make their own food from sunlight is called:
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmoregulation
Question 10
A bio\logist is studying the structure of a plant cell. What is the primary function of the cell wall?
A. Support and protection of the cell
B. Regulation of cell growth and division
C. Transport of materials into and out of the cell
D. Synthesis of proteins and other biomolecules
Question 11
The process of evolution in living organisms involves the change in the frequency of alleles in a population over time. Which of the following mechanisms of evolution is responsible for the increase in the frequency of a beneficial allele?
A. Natural selection
B. Genetic drift
C. Gene flow
D. Mutation
Question 12
A bio\logist observes that a population of bacteria exhibits a sigmoid growth curve. What is the most likely reason for this growth pattern?
A. Limited resources
B. Predation by other organisms
C. Genetic variation within the population
D. Environmental factors such as temperature and pH
Question 13
A population of rabbits is growing exponentially. If the initial population size is 100 and the growth rate is 25% per year, what will be the population size after 3 years?
A. 225
B. 250
C. 300
D. 375
Question 14
A patient is diagnosed with a bacterial infection. The bacteria are resis\tant to multiple antibiotics. What is the most likely explanation for this resis\tance?
A. Horizontal gene transfer
B. Vertical gene transfer
C. Mutation
D. Gene editing
Question 15
In a tropical rainforest, the primary consumers are primarily herbivores that feed on the abundant plant life. Which of the following is a characteristic of these herbivores?
A. They have a large cecum to house a diverse community of microbes.
B. They have a short digestive tract to quickly process plant material.
C. They have a large liver to detoxify plant toxins.
D. They have a large pancreas to produce digestive enzymes.

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