POST UTME UNIOSUN 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
Asexual reproduction in plants can occur through which of the following methods?
A. Budding
B. Fragmentation
C. Vegetative propagation
D. Spore formation
Question 2
A diagram of the human digestive system is shown below. What is the function of the part labeled B?
A. To absorb nutrients into the bloodstream
B. To break down proteins into amino acids
C. To store waste until it is eliminated
D. To produce hormones that regulate digestion
Question 3
The nervous system is responsible for transmitting signals from sensory receptors to the brain, where they are interpreted and processed. Which of the following types of neurons is responsible for transmitting signals from sensory receptors to the spinal cord?
A. Motor neuron
B. Sensory neuron
C. Interneuron
D. Association neuron
Question 4
In the context of tissue organization, what is the primary function of the basement membrane?
A. To provide structural support to the tissue
B. To facilitate the exchange of nutrients and waste products
C. To act as a barrier against pathogens and toxins
D. To regulate the movement of cells within the tissue
Question 5
The process of mitosis in eukaryotic cells involves the replication of DNA and the subsequent division of the cell into two daughter cells. Which of the following stages of mitosis is characterized by the condensation of chromosomes and the formation of the spindle apparatus?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 6
A population of rabbits is introduced to a new island with limited resources. Which of the following eco\logical concepts best describes the expected outcome?
A. Carrying capacity
B. Predator-prey dynamics
C. Competition for resources
D. Succession
Question 7
A plant cell has a vacuole that contains 0.5 M sucrose solution. If the cell membrane is selectively permeable, what is the concentration of sucrose in the cytosol after 10 minutes?
A. 0.1 M
B. 0.3 M
C. 0.5 M
D. 0.7 M
Question 8
The human immune system is a complex network of cells, tissues, and organs that work together to def\end the body against pathogens. Which of the following types of white blood cells is responsible for phagocytosis?
A. T cells
B. B cells
C. Macrophages
D. Neutrophils
Question 9
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
B. 0.64
C. 0.72
D. 0.84
Question 10
A diagram of the human circulatory system is shown below. Which part of the system is responsible for the exchange of oxygen and carbon dioxide?
A. A
B. B
C. C
D. D
Question 11
A diagram of the human nervous system is shown below. What is the function of the part labeled A?
A. To transmit sensory information to the brain
B. To regulate body temperature
C. To control voluntary movements
D. To produce hormones
Question 12
A cell is in the G2 phase of the cell cycle. If the cell is treated with a drug that inhibits DNA replication, what will happen to the cell?
A. The cell will undergo mitosis and divide
B. The cell will enter the G1 phase
C. The cell will die
D. The cell will enter the G0 phase
Question 13
A geneticist is studying the inheri\tance of a trait in a family. If the trait is inherited in an autosomal dominant pattern, what is the probability that a child will inherit the dominant allele?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 14
A study on the genetic variation of a population found that 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'?
A. 0.2
B. 0.4
C. 0.6
D. 0.8
Question 15
A diagram of the human respiratory system is shown below. Which part of the system is responsible for the exchange of oxygen and carbon dioxide?
A. A
B. B
C. C
D. D

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