POST UTME UNILORIN 2022 Biology | Objective
Practice these randomly selected questions to test your readiness.
Question 1
A study on the genetic variation of a population found that the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'A'?
Question 2
In a population of 1000 bacteria, 80% are susceptible to antibiotic treatment, 15% are resis\tant, and 5% are in a latent state. If 200 bacteria are treated with an antibiotic, what is the expected number of bacteria that will be killed?
Question 3
A diagram of the human eye is shown below. What is the function of the part labeled 'A'?
Question 4
In a eukaryotic cell, the process of cytokinesis is initiated by the contraction of which of the following structures?
Question 5
A plant cell has a cell wall composed of cellulose, hemicellulose, and pectin. Which of the following is NOT a primary function of the cell wall?
Question 6
A researcher is studying the effect of a hormone on the growth of a plant. The hormone is applied to the plant at a concentration of 10^-5 M. If the plant grows at a rate of 2 cm/h, what is the rate of growth after 5 hours?
Question 7
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 8
A diagram of the human respiratory system is shown below. Which of the following structures is responsible for the exchange of oxygen and carbon dioxide?
Question 9
A population of Drosophila melanogaster is being studied for its response to selection pressure. The initial population mean is 10 cm, and the s\tandard deviation is 2 cm. After 10 generations of selection, the population mean increases to 12 cm. Assuming a heritability of 0.5, calculate the selection differential (S) and the realized heritability \( h^2_r \).
Question 10
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 11
A diagram of the human kidney is shown below. What is the function of the part labeled 'B'?
Question 12
In a population of 1000 bacteria, 80% are susceptible to a particular antibiotic. If 200 bacteria are exposed to the antibiotic, what is the expected number of resis\tant bacteria?
Question 13
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation if?
Question 14
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 15
A plant has a root system that consists of 50% primary roots and 50% secondary roots. If the plant has 1000 roots, how many of them are secondary roots?
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