POST UTME EKSU 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The xylem tissue in plants is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
A. It is composed of dead cells
B. It is composed of living cells
C. It is responsible for transporting sugars from the leaves to the roots
D. It is responsible for transporting water and minerals from the roots to the leaves
Question 2
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
A. Site of protein synthesis
B. Site of lipid synthesis
C. Site of carbohydrate synthesis
D. Site of DNA replication
Question 3
The theory of evolution by natural selection was first proposed by
A. Charles Darwin
B. Gregor M\endel
C. Jean-Baptiste Lamarck
D. Alfred Russel Wallace
Question 4
A population of bacteria is growing exponentially. If the initial population size is 100 and the growth rate is 20% per hour, what will be the population size after 3 hours?
A. 1000
B. 2000
C. 4000
D. 8000
Question 5
A diagram of a human kidney is shown below. What is the function of the structure labeled 'Y'?
A. Site of filtration
B. Site of reabsorption
C. Site of secretion
D. Site of excretion
Question 6
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?
A. 0.36
B. 0.64
C. 0.16
D. 0.84
Question 7
In the xylem, what is the primary function of the tracheids?
A. Transporting water and minerals from the roots to the leaves
B. Producing sugars through photosynthesis
C. Storing starch and proteins
D. Regulating the opening and clo\sing of stomata
Question 8
A 500 mL sample of water contains 1 g of dissolved oxygen. If the partial pressure of oxygen in the air is 0.21 atm, what is the concentration of dissolved oxygen in the water?
A. 0.1 g/L
B. 0.5 g/L
C. 1.0 g/L
D. 5.0 g/L
Question 9
A diagram of a plant cell is shown below. Identify the part labeled B.
A. Nucleus
B. Cell wall
C. Mitochondria
D. Chloroplast
Question 10
What is the term for the process by which plants adapt to their environment?
A. Evolution
B. Mutation
C. Genetic drift
D. Natural selection
Question 11
Asexual reproduction in plants can occur through the process of
A. Budding
B. Fragmentation
C. Runners and tubers
D. Spores
Question 12
A diagram of a simple harmonic motion is shown below. What is the amplitude of the motion?
A. 2 cm
B. 4 cm
C. 6 cm
D. 8 cm
Question 13
A diagram of a human digestive system is shown below. What is the function of the structure labeled 'Z'?
A. Site of mechanical digestion
B. Site of chemical digestion
C. Site of absorption
D. Site of elimination
Question 14
A 100 mL sample of soil contains 50 g of organic matter. If the soil has a bulk density of 1.5 g/mL, what is the concentration of organic matter in the soil?
A. 10%
B. 20%
C. 30%
D. 40%
Question 15
The process of mitosis is a type of cell division that results in two daughter cells that are genetically identical to the parent cell. Which of the following stages of mitosis is characterized by the separation of sister chromatids?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase

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