POST UTME RSU 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
Which of the following types of transport systems in plants is responsible for the movement of water and minerals from the roots to the leaves?
A. Xylem
B. Phloem
C. Cortex
D. Endodermis
Question 2
A diagram of a human kidney is shown below. What is the function of the structure labeled 'Y'?
A. Site of urine formation
B. Site of electrolyte regulation
C. Site of blood filtration
D. Site of hormone regulation
Question 3
A geneticist is studying the inheri\tance of a trait in a population of mice. The trait is determined by a \single gene with two alleles: 'B' and 'b'. The frequency of the 'B' allele is 0.8, and the frequency of the 'b' allele is 0.2. What is the expected frequency of the homozygous recessive genotype?
A. 0.16
B. 0.36
C. 0.64
D. 0.04
Question 4
In the context of nutrition, what is the primary function of chlorophyll in plants?
A. Absorption of light energy
B. Conversion of light energy into chemical energy
C. Transport of water and minerals from roots to leaves
D. Transport of sugars and amino acids from leaves to roots
Question 5
A genetic disorder is caused by a mutation in a \single gene that codes for a protein essential for proper development. What type of genetic variation is this an example of?
A. Point mutation
B. Frameshift mutation
C. Deletion
D. Insertion
Question 6
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. The block is displaced by 0.15 m from its equilibrium position and released from rest. What is the speed of the block when it passes through the equilibrium position?
A. 1.5 m/s
B. 2.5 m/s
C. 3.5 m/s
D. 4.5 m/s
Question 7
The human eye has a re\fractive index of approximately 1.33. If a light ray enters the eye at an angle of incidence of 30°, what is the angle of re\fraction?
A. 20°
B. 25°
C. 30°
D. 35°
Question 8
In the context of cell division, which of the following stages is characterized by the separation of the sister chromatids?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 9
In a forest e\cosystem, what is the primary function of the decomposer community?
A. To produce organic compounds from inorganic subs\tances.
B. To break down dead plant and animal matter.
C. To form symbiotic relationships with other organisms.
D. To regulate the population of herbivores.
Question 10
A cell is placed in a solution with a pH of 7.4. If the cell membrane has a permeability coefficient of 10^-5 cm/s, what is the expected rate of diffusion of H+ ions into the cell?
A. 10^-3 M/s
B. 10^-4 M/s
C. 10^-5 M/s
D. 10^-6 M/s
Question 11
A diagram of the human kidney is shown below. Which part of the kidney is responsible for filtering waste products from the blood?
A. Nephron
B. Renal artery
C. Renal vein
D. Renal cortex
Question 12
Which of the following types of cells is primarily responsible for the production of melanin?
A. Melanocytes
B. Keratinocytes
C. Fibroblasts
D. Epithelial cells
Question 13
In the context of transport systems, what is the primary function of the xylem in plants?
A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Transport of waste products from leaves to roots
D. Transport of hormones from roots to leaves
Question 14
A 5.0 g sample of a subs\tance is dissolved in 50.0 mL of water. If the resulting solution has a concentration of 0.25 M, what is the molar mass of the subs\tance?
A. 20 g/mol
B. 30 g/mol
C. 40 g/mol
D. 50 g/mol
Question 15
In a tropical rainforest e\cosystem, the primary consumers are primarily herbivores that feed on the abundant vegetation. Which of the following is a characteristic of these primary consumers?
A. They have a high metabolic rate
B. They have a low reproductive rate
C. They have a long digestive tract
D. They have a large home range

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