POST UTME LAUTECH 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A plant has a xylem sap concentration of 2.5 M. If the plant's transpiration rate is 0.5 L/min, what is the rate of water uptake by the roots?
A. 0.125 L/min
B. 0.25 L/min
C. 0.5 L/min
D. 1 L/min
Question 2
A diagram of the human kidney is shown below. What is the primary function of the nephrons in the kidney?
A. To filter waste products from the blood
B. To regulate the amount of water in the body
C. To remove excess ions from the body
D. To maintain the pH balance in the body
Question 3
In the context of evolutionary theories, what is the primary mechanism driving the adaptation of species to their environments?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 4
Asexual reproduction in plants can occur through the production of what type of structures?
A. Buds
B. Runners
C. Rhizomes
D. Stolons
Question 5
A couple is trying to conceive a child. What is the primary function of the hypothalamus in the reproductive process?
A. To regulate body temperature
B. To regulate hunger and thirst
C. To stimulate the release of gonadotropin-relea\sing hormone
D. To stimulate the release of growth hormone
Question 6
A plant is placed in a controlled environment with a cons\tant temperature of 25°C and a photoperiod of 12 hours light and 12 hours darkness. The plant is grown in a medium with a pH of 6.5 and a nutrient solution that provides all essential nutrients. After 30 days, the plant has reached a height of 10 cm. What is the most likely reason for the limited growth of this plant?
A. Lack of light
B. Lack of water
C. Lack of nutrients
D. Lack of CO2
Question 7
In the context of osmoregulation, what is the primary function of the reabsorption of ions in the renal tubules?
A. To maintain the balance of electrolytes in the body
B. To regulate the amount of water in the body
C. To remove excess ions from the body
D. To maintain the pH balance in the body
Question 8
A researcher is studying the effects of climate change on plant growth. She observes that the plants grow in a pattern that can be described by the equation \( y = 2x^2 + 3x - 4 \). If the initial population is 100 cells, how many cells will be present after 2 hours?
A. 16000
B. 32000
C. 64000
D. 128000
Question 9
In the context of cellular respiration, what is the primary function of the mitochondria?
A. Production of ATP through the process of photosynthesis
B. Regulation of cell growth and division
C. Removal of waste products through the process of excretion
D. Production of ATP through the process of cellular respiration
Question 10
A diagram of the human brain is shown below. What is the primary function of the cerebral cortex?
A. To process sensory information
B. To regulate the amount of water in the body
C. To remove excess ions from the body
D. To maintain the pH balance in the body
Question 11
A 35-year-old woman has been experiencing symptoms of malnutrition, including fatigue and weakness. Her diet consists mainly of refined carbohydrates and processed foods. What is the primary nutritional deficiency that she is likely to experience?
A. Vitamin B12 deficiency
B. Iron deficiency
C. Folate deficiency
D. Vitamin D deficiency
Question 12
A patient is diagnosed with a bacterial infection caused by Escherichia coli. Which of the following antibiotics is most likely to be effective against this infection?
A. Penicillin
B. Amoxicillin
C. Ciprofloxacin
D. Vancomycin
Question 13
A species of bird has a beak shape that is adapted for cracking open nuts. The beak shape is determined by a \single gene with two alleles: B (beak shape) and b (normal beak shape). The frequency of the B allele in the population is 0.2. What is the expected frequency of the B allele in the next generation?
A. 0.16
B. 0.24
C. 0.32
D. 0.40
Question 14
What is the primary function of the Golgi apparatus in eukaryotic cells?
A. To synthesize proteins
B. To synthesize lipids
C. To modify and package proteins and lipids
D. To degrade proteins and lipids
Question 15
A population of Drosophila melanogaster is being studied for its genetic variation. What type of genetic variation would you expect to observe in this population?
A. Genetic drift
B. Mutation
C. Genetic variation due to gene flow
D. Genetic variation due to genetic recombination

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