POST UTME ABU 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 5% solution of glu\cose in water is prepared by dissolving 5g of glu\cose in 95g of water. What is the concentration of the solution in g/100g?
A. 5g/100g
B. 10g/100g
C. 15g/100g
D. 20g/100g
Question 2
A population of bacteria is growing at a rate of 20% per hour. If the initial population is 1000, what will be the population after 3 hours?
A. 1200
B. 2400
C. 4800
D. 9600
Question 3
A geneticist wants to study the inheri\tance of a particular trait in a population of pea plants. Which of the following methods would be most appropriate for this study?
A. M\endelian genetics
B. Genetic engineering
C. Genetic drift
D. Natural selection
Question 4
In a food chain, what is the primary role of a producer?
A. To consume other organisms
B. To produce its own food
C. To decompose dead organisms
D. To regulate the population of other organisms
Question 5
A diagram of a plant cell is shown below. What is the function of the cell wall?
A. Regulation of cell growth
B. Maintenance of cell shape
C. Protection against pathogens
D. Transport of nutrients
Question 6
A certain e\cosystem has a population of 1000 individuals, with 20% of the population being herbivores, 30% being carnivores, and 50% being decomposers. If the e\cosystem is disturbed, what is the expected change in the population size of the herbivores?
A. -20%
B. -30%
C. -40%
D. -50%
Question 7
A diagram of a human reproductive system is shown below. What is the function of the vas deferens?
A. Production of sperm
B. Storage of sperm
C. Transport of sperm
D. Regulation of hormone levels
Question 8
In the context of classification of living things, which of the following is an example of a characteristic that is used to distinguish between prokaryotic and eukaryotic cells?
A. Cell wall
B. Chloroplasts
C. Mitochondria
D. Ribosomes
Question 9
In a population of 1000 individuals, 70% are heterozygous for the gene controlling the production of a certain enzyme. If 20% of the population is homozygous recessive, what is the frequency of the dominant allele?
A. 0.4
B. 0.45
C. 0.5
D. 0.55
Question 10
A diagram of a plant cell is shown below. What is the function of the structure labeled A?
A. To regulate the movement of materials in and out of the cell
B. To synthesize proteins
C. To store genetic information
D. To produce energy for the cell
Question 11
A human egg cell is fertilized by a sperm cell, resulting in the formation of a zygote. What is the next stage in the development of the zygote?
A. Blastocyst formation
B. Morula formation
C. Trophoblast formation
D. Cleavage stage
Question 12
In a photosynthetic reaction, what is the net result of the conversion of light energy to chemical energy?
A. The production of glu\cose and oxygen
B. The production of glu\cose and carbon dioxide
C. The production of oxygen and water
D. The production of glu\cose and water
Question 13
The process of mitosis in a cell results in the production of which type of cells?
A. Identical daughter cells
B. Genetically identical daughter cells
C. Non-identical daughter cells
D. Genetically non-identical daughter cells
Question 14
What is the primary function of the xylem in plants?
A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Support and storage
D. Protection and defense
Question 15
What is the primary function of the hypothalamus in the regulation of body temperature?
A. Production of heat-shock proteins
B. Activation of sweat glands
C. Stimulation of shivering
D. Inhibition of heat loss

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