POST UTME WELLSPRING UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a human eye is shown below. Identify the part labeled 'B'.
A. Cornea
B. Iris
C. Retina
D. Lens
Question 2
A 0.5-molar solution of HCl is mixed with a 0.2-molar solution of NaOH. What is the resulting pH?
A. 1
B. 2
C. 3
D. 4
Question 3
What is the primary mechanism by which the nervous system coordinates the body's response to a stimulus?
A. Synaptic transmission
B. Neurotransmitter release
C. Action potential propagation
D. Muscle contraction
Question 4
What is the term for the process by which microorganisms, such as bacteria, become resis\tant to antibiotics?
A. Antibiotic resis\tance
B. Antibiotic sensitivity
C. Bacterial mutation
D. Bacterial transformation
Question 5
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' 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 6
In asexual reproduction, what is the primary mechanism by which genetic variation is introduced?
A. Mutation
B. Genetic recombination
C. Gene duplication
D. Gene deletion
Question 7
A diagram of the human circulatory system is shown below. What is the primary function of the heart?
A. Pumping blood to the lungs
B. Pumping blood to the brain
C. Pumping blood to the muscles
D. Regulation of blood pressure
Question 8
In the context of cell structure, what is the primary function of the nucleus?
A. Synthesis of proteins
B. Storage of genetic information
C. Regulation of cell growth
D. Transport of ions
Question 9
A 2.5-liter solution contains 1.8 liters of ethanol and 0.7 liters of water. What is the mole \fraction of ethanol?
A. 0.72
B. 0.80
C. 0.88
D. 0.96
Question 10
A population of 1000 individuals has a mean height of 170 cm and a s\tandard deviation of 10 cm. If a sample of 50 individuals is randomly selected from this population, what is the probability that the sample mean height will be greater than 175 cm?
A. 0.0563
B. 0.0572
C. 0.0581
D. 0.0590
Question 11
A diagram of the xylem and phloem tissues in a plant is shown below. What is the primary function of the xylem?
A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Support and storage
D. Protection from pathogens
Question 12
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis
Question 13
A diagram of a simple food chain is shown below. What is the role of the producer in this e\cosystem?
A. Primary consumer
B. Secondary consumer
C. Decomposer
D. Producer
Question 14
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Mitochondria
B. Chloroplast
C. Vacuole
D. Nucleus
Question 15
In the context of evolutionary theories, what is the primary mechanism by which natural selection acts on genetic variation?
A. Genetic drift
B. Gene flow
C. Mutation
D. Differential reproduction

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