POST UTME UNILORIN 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of the human circulatory system is shown below. Which part of the system is responsible for pumping blood throughout the body?
A. Heart
B. Arteries
C. Veins
D. Capillaries
Question 2
A 25-year-old woman with a history of polycystic ovary syndrome (PCOS) presents with amenorrhea and hirsutism. Which of the following hormonal imbalances is most likely responsible for her symptoms?
A. Hyperestrogenism
B. Hyperprolactinemia
C. Hyperandrogenism
D. Hypothyroidism
Question 3
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. Gene flow
D. Heritability
Question 4
A 35-year-old woman with a history of hypertension and hyperlipidemia presents with a 2-week history of chest pain and shortness of breath. Which of the following conditions is most likely responsible for her symptoms?
A. Acute coronary syndrome
B. Pulmonary embolism
C. Aortic dissection
D. Cardiac tamponade
Question 5
Which of the following is an example of a symbiotic relationship?
A. Predator-prey relationship
B. Competitive relationship
C. Mutualistic relationship
D. Parasitic relationship
Question 6
The process of excretion in animals involves the removal of excess water and salts through the
A. kidneys
B. liver
C. lungs
D. skin
Question 7
The process by which plants transport water and minerals from the roots to the leaves is called
A. Transpiration
B. Translocation
C. Osmosis
D. Diffusion
Question 8
In the xylem transport system, what is the primary function of the xylem parenchyma cells?
A. To store water and minerals
B. To transport water and minerals
C. To regulate water and mineral uptake
D. To break down organic matter
Question 9
In the context of eco\logy, what is the term for the relationship between two species in which one species benefits and the other is harmed?
A. Mutualism
B. Commensalism
C. Parasitism
D. Predation
Question 10
The process of photosynthesis in plants occurs in the
A. roots
B. stems
C. leaves
D. flowers
Question 11
A diagram of the human respiratory system is shown below. Which part of the system is responsible for exchanging oxygen and carbon dioxide?
A. Lungs
B. Trachea
C. Bronchi
D. Alveoli
Question 12
Asexual reproduction in plants occurs through the production of
A. seeds
B. spores
C. buds
D. runners
Question 13
What is the primary function of the mitochondria in a cell?
A. To synthesize proteins
B. To store genetic information
C. To generate energy for the cell
D. To regulate cell growth
Question 14
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, calculate the frequency of the dominant allele 'R'.
A. 0.8
B. 0.6
C. 0.4
D. 0.2
Question 15
A diagram of the human circulatory system is shown below. What is the function of the part labeled 'B'?
A. To pump blood to the lungs
B. To carry oxygenated blood to the body
C. To regulate blood pressure
D. To produce blood cells

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