POST UTME UI 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of the xylem and phloem tissues in a plant stem is shown below. Which of the following statements is true regarding the xylem tissue?
A. It transports water and minerals from the roots to the leaves
B. It transports sugars and amino acids from the leaves to the roots
C. It transports water and minerals from the leaves to the roots
D. It transports sugars and amino acids from the roots to the leaves
Question 2
A diagram of the human digestive system is shown below. Which of the following statements is true regarding the small intestine?
A. It is responsible for absorbing water and electrolytes
B. It is responsible for breaking down proteins and carbohydrates
C. It is responsible for absorbing vitamins and minerals
D. It is responsible for absorbing fats and oils
Question 3
A bacterium has a mutation that causes it to produce a toxin that kills other bacteria. Which of the following is a possible outcome of this mutation?
A. The bacterium will become more competitive
B. The bacterium will become less competitive
C. The bacterium will die
D. The bacterium will become resis\tant to antibiotics
Question 4
A diagram of a plant cell is shown below. Identify the organelle responsible for photosynthesis.
A. Mitochondria
B. Vacuole
C. Chloroplast
D. Nucleus
Question 5
A plant has a mutation that causes it to produce more flowers. Which of the following is a possible outcome of this mutation?
A. The plant will produce more seeds
B. The plant will produce more fruits
C. The plant will produce more flowers
D. The plant will die
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
A plant with the genotype 'Rr' is crossed with a plant with the genotype 'rr'. What is the probability that the offspring will have the genotype 'Rr'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 8
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
A. to synthesize proteins
B. to store genetic information
C. to regulate cell growth
D. to transport materials
Question 9
A 2.5-liter solution contains 1.8 M NaCl. If 250 mL of this solution is diluted to 1 liter, what is the concentration of NaCl in the resulting solution?
A. 0.72 M
B. 0.8 M
C. 0.9 M
D. 1.0 M
Question 10
A patient is diagnosed with a bacterial infection. The bacteria are resis\tant to multiple antibiotics. What is the most likely mechanism of resis\tance?
A. Horizontal gene transfer
B. Vertical gene transfer
C. Mutation
D. Gene expression
Question 11
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 12
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?
A. 0.36
B. 0.64
C. 0.16
D. 0.04
Question 13
A population of rabbits has a birth rate of 0.05 and a death rate of 0.01. If the initial population size is 1000, what is the population size after 5 years?
A. 1500
B. 2000
C. 2500
D. 3000
Question 14
A diagram of the human skeletal system is shown below. Which of the following bones is responsible for the formation of red blood cells?
A. Femur
B. Humerus
C. Ribs
D. Sternum
Question 15
A diagram of the human circulatory system is shown below. Which of the following statements is true regarding the heart?
A. It pumps blood to the lungs for oxygenation
B. It pumps blood to the body for oxygenation
C. It pumps blood to the heart for oxygenation
D. It pumps blood to the liver for oxygenation

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