POST UTME COVENANT UNIVERSITY 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A genetic trait is inherited in an autosomal recessive pattern. If a parent has the recessive allele, what is the probability that their offspring will inherit the recessive allele?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 2
A geneticist is studying the inheri\tance of a particular trait in a population. Which of the following is a likely outcome of a cross between two heterozygous individuals?
A. The offspring will all be homozygous dominant
B. The offspring will all be homozygous recessive
C. The offspring will be a mix of homozygous dominant and homozygous recessive
D. The offspring will all be heterozygous
Question 3
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'BB'?
A. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 4
The process of photosynthesis in plants occurs primarily in the _______ tissue.
A. palisade
B. spongy
C. vascular
D. epidermal
Question 5
A genetic trait is inherited in an autosomal dominant pattern. If a parent has the dominant allele, what is the probability that their offspring will inherit the dominant allele?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 6
In the context of evolutionary theory, what is the primary mechanism by which species adapt to their environment?
A. Natural Selection
B. Genetic Drift
C. Mutation
D. Gene Flow
Question 7
The process of gas exchange in plants occurs primarily in the _______ tissue.
A. palisade
B. spongy
C. vascular
D. epidermal
Question 8
The diagram below shows a cross-section of a human kidney. What is the primary function of the nephrons?
A. Filtering of waste products
B. Regulation of body temperature
C. Production of hormones
D. Absorption of nutrients
Question 9
The graph below shows the relationship between the concentration of a substrate and the rate of enzyme activity. What is the name of the enzyme that catalyzes this reaction?
A. Amylase
B. Lactase
C. Tryp\sin
D. Pep\sin
Question 10
A population of rabbits is growing exponentially. If the initial population is 100 and the growth rate is 20% per year, what will be the population after 5 years?
A. 1000
B. 2000
C. 4000
D. 8000
Question 11
The theory of evolution by natural selection is supported by the _______ of the fossil record.
A. gradual
B. rapid
C. catastrophic
D. uniform
Question 12
The xylem tissue in plants is responsible for the transport of _______.
A. water and minerals
B. sugars and amino acids
C. oxygen and carbon dioxide
D. nitrogen and phosphorus
Question 13
The process of meiosis in eukaryotic cells results in the production of _______ haploid cells.
A. 1
B. 2
C. 4
D. 8
Question 14
A plant cell has a cell wall, a large central vacuole, and a small amount of cytoplasm. Which of the following is NOT a characteristic of plant cells?
A. Large central vacuole
B. Small amount of cytoplasm
C. Cell wall
D. Mitochondria
Question 15
The xylem tissue in plants is responsible for the transport of _______ from the roots to the leaves.
A. water and minerals
B. sugars and amino acids
C. oxygen and carbon dioxide
D. nitrogen and phosphorus

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