POST UTME KSU 2025 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
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'?
Question 2
A plant's xylem is responsible for transporting water and minerals from the roots to the leaves. What is the term for the process by which water is transported through the xylem?
Question 3
In a population of 1000 individuals, 70% are heterozygous for the gene controlling the production of the enzyme lactase. If 50% of the individuals are homozygous recessive for the gene, what is the expected frequency of the homozygous dominant genotype?
Question 4
A solution contains 0.1 M glu\cose and 0.2 M fructose. What is the total concentration of sugars in the solution?
Question 5
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'?
Question 6
A plant has a root system with a total surface area of 100 cm^2. If the root system is covered with a 1 mm thick layer of soil, what is the volume of the soil?
Question 7
The growth of an organism is influenced by various factors, including genetics, environment, and nutrition. What is the term for the study of the factors that influence growth?
Question 8
A diagram of a plant cell is shown below. Identify the part labeled 'X'.
Question 9
A plant cell has a vacuole that contains 0.5 M sucrose. If the cell membrane is permeable to sucrose, what is the concentration of sucrose in the cytosol, assuming equilibrium is reached?
Question 10
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'?
Question 11
A diagram of a simple circuit is shown below. Identify the part labeled 'A'.
Question 12
In a tropical rainforest, the primary consumers are primarily herbivores that feed on the abundant plant life. However, some primary consumers are carnivores that feed on other primary consumers. What is the term for this type of consumer?
Question 13
A diagram of a human circulatory system is shown below. What is the function of the structure labeled 'C'?
Question 14
A 2.0 L solution contains 0.8 M glu\cose. What is the concentration of glu\cose in the solution in g/L?
Question 15
A 10% solution of glu\cose is prepared by dissolving 10 g of glu\cose in 90 g of water. What is the mass of the solution?
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