POST UTME ESUT 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a plant cell is shown below. Identify the structure labeled 'A'.
A. Nucleus
B. Mitochondria
C. Chloroplast
D. Vacuole
Question 2
A plant with the genotype RrSs is crossed with a plant with the genotype rrSS. What is the probability that the offspring will have the genotype RrSs?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 3
In a diploid cell, what is the ratio of the number of alleles for a particular gene that are homozygous recessive to the number of alleles that are heterozygous?
A. 1:1
B. 1:2
C. 2:1
D. 3:1
Question 4
The diagram below represents a simple e\cosystem. What is the role of the decomposers in the e\cosystem?
A. To produce energy for the e\cosystem
B. To recycle nutrients for the e\cosystem
C. To regulate the population of the e\cosystem
D. To maintain the structure of the e\cosystem
Question 5
A 2.0 g sample of a compound is dissolved in 100 mL of water. The solution has a pH of 4.5. What is the concentration of hydrogen ions in the solution?
A. 1.0 x 10^-5 M
B. 1.0 x 10^-4 M
C. 1.0 x 10^-3 M
D. 1.0 x 10^-2 M
Question 6
The process by which plants convert light energy into chemical energy is known as
A. photosynthesis
B. respiration
C. transpiration
D. translocation
Question 7
A plant has a photosynthetic rate of 10.0 μmol CO2/s. If the plant is exposed to light for 8 hours, what is the total amount of CO2 fixed?
A. 80.0 μmol
B. 160.0 μmol
C. 240.0 μmol
D. 320.0 μmol
Question 8
The diagram below shows a cross-section of a human heart. What is the function of the part labeled 'D'?
Question 9
The diagram below shows a simple circuit. What is the function of the part labeled 'R'?
A. to reduce the current flowing through the circuit
B. to increase the voltage across the circuit
C. to control the flow of electrons
D. to measure the resis\tance of the circuit
Question 10
The diagram below represents a cross-section of a plant root. What is the function of the cells labeled 'A'?
A. To absorb water and minerals from the soil
B. To store food produced by photosynthesis
C. To produce hormones that regulate plant growth
D. To support the structure of the plant
Question 11
The diagram below shows a cross-section of a plant root. What is the function of the part labeled 'A'?
A. absorption of water and minerals
B. transport of sugars and amino acids
C. storage of food and water
D. support and protection
Question 12
A diagram of the human circulatory system is shown below. Which part of the system is responsible for transporting oxygenated blood to the body?
A. Arteries
B. Capillaries
C. Veins
D. Heart
Question 13
In the context of classification of living things, what is the primary function of the kingdom level?
A. To group organisms based on their cell structure
B. To group organisms based on their body symmetry
C. To group organisms based on their mode of nutrition
D. To group organisms based on their genetic makeup
Question 14
A diagram of a plant cell is shown below. Identify the organelle labeled 'X'.
Question 15
The diagram below shows a cross-section of a human eye. What is the function of the part labeled 'C'?
A. to focus light onto the retina
B. to control the amount of light entering the eye
C. to convert light into electrical signals
D. to detect color and depth

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