POST UTME EKSU 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of osmoregulation in animals involves the regulation of water and salt balance in the body. Which of the following is a primary mechanism of osmoregulation in the kidneys?
A. Reabsorption of water in the proximal convoluted tubule
B. Secretion of potassium ions in the distal convoluted tubule
C. Reabsorption of sodium ions in the loop of Henle
D. Excretion of urea in the collecting duct
Question 2
In a freshwater e\cosystem, the primary producers are phytoplankton. What is the role of phytoplankton in the e\cosystem?
A. Decomposers
B. Primary consumers
C. Primary producers
D. Secondary consumers
Question 3
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'?
A. 0.36
B. 0.64
C. 0.72
D. 0.84
Question 4
The sense organ responsible for detecting changes in sound waves is the?
A. Ear
B. Eye
C. Nose
D. Tongue
Question 5
A researcher is studying the process of reproduction in plants. What is the primary function of the stigma in the flower?
A. To produce pollen
B. To receive pollen
C. To produce ovules
D. To regulate stomatal opening and clo\sing
Question 6
In the context of photosynthesis, what is the primary function of the thylakoid membranes in the chloroplast?
A. To synthesize ATP and NADPH
B. To synthesize glu\cose and oxygen
C. To transport water and minerals into the plant
D. To regulate stomatal opening and clo\sing
Question 7
In a diploid cell, what is the total number of chromosomes in the zygote after meiosis?
A. 46
B. 23
C. 92
D. 69
Question 8
The classification of living things is based on their shared characteristics and evolutionary relationships. Which of the following is a domain of life?
A. Archaea
B. Bacteria
C. Eukarya
D. All of the above
Question 9
A plant cell undergoes mitosis. What is the number of chromosomes in the daughter cells?
A. 46
B. 92
C. 23
D. 69
Question 10
A population of rabbits has a birth rate of 0.05 and a death rate of 0.01. What is the growth rate of the population?
A. 0.04
B. 0.05
C. 0.06
D. 0.07
Question 11
The process of growth and development in living organisms is regulated by a complex interplay of hormones and other signaling molecules. Which of the following hormones is responsible for promoting growth and development in plants?
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene
Question 12
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'R'?
A. 0.8
B. 0.6
C. 0.4
D. 0.2
Question 13
The hormone responsible for regulating blood sugar levels is?
A. Insulin
B. Glucagon
C. Adrenaline
D. Thyroid hormone
Question 14
A researcher isolates a bacterium that causes a disease in plants. The bacterium has a flagellum and a cell wall. Which of the following is a characteristic of this bacterium?
A. It is a fungus.
B. It is a protist.
C. It is a bacterium.
D. It is a virus.
Question 15
A researcher isolates a virus that causes a disease in humans. The virus has a protein coat and a genetic material of RNA. Which of the following is a characteristic of this virus?
A. It is a bacterium.
B. It is a fungus.
C. It is a virus.
D. It is a protist.

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