POST UTME REDEEMERS UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The diagram below represents a cross-section of a plant root. What is the function of the labeled structure?
A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Storage of starch and proteins
D. Support and structure of the plant
Question 2
The e\cosystem shown below is an example of a
A. Desert
B. Rainforest
C. Grassland
D. Tundra
Question 3
In a typical plant cell, what is the primary function of the vacuole?
A. To store water and nutrients
B. To regulate the concentration of ions in the cytosol
C. To synthesize proteins and other biomolecules
D. To maintain the cell's turgor pressure
Question 4
A population of bacteria is growing in a controlled environment. The initial population size is 100 cells, and the growth rate is 20% per hour. What is the population size after 5 hours?
A. 1000 cells
B. 1200 cells
C. 1500 cells
D. 2000 cells
Question 5
The xylem tissue in plants is responsible for
A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Storage of starch and proteins
D. Support and structure of the plant
Question 6
A diagram of the human kidney is shown below. Identify the structure labeled 'A'?
A. Renal cortex
B. Renal medulla
C. Renal pelvis
D. Ureter
Question 7
Asexual reproduction in plants can occur through the process of
A. Budding
B. Fragmentation
C. Runners
D. Rhizome
Question 8
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of fluid balance
C. Response to stress and anxiety
D. Regulation of appetite and satiety
Question 9
A researcher is studying the classification of living things. Which of the following kingdoms is characterized by the presence of cell walls made of chitin?
A. Animalia
B. Plantae
C. Fungi
D. Protista
Question 10
Which of the following statements best describes the role of the pancreas in digestion?
A. It secretes digestive enzymes that break down proteins and carbohydrates
B. It produces hormones that regulate blood sugar levels
C. It absorbs nutrients from the small intestine
D. It stores bile from the liver
Question 11
A geneticist is studying the inheri\tance of a particular trait in a population of plants. The trait is controlled by a \single gene with two alleles: R (dominant) and r (recessive). What is the expected genotype and phenotype of an offspring from a cross between a homozygous dominant parent (RR) and a heterozygous parent (Rr)?
A. Genotype: Rr, Phenotype: R
B. Genotype: Rr, Phenotype: r
C. Genotype: RR, Phenotype: R
D. Genotype: rr, Phenotype: r
Question 12
A diagram of a human eye is shown below. What is the function of the structure labeled 'Y'?
A. Regulation of light entry
B. Focus of light
C. Detection of light
D. Production of tears
Question 13
A diagram of a human eye is shown below. What is the function of the retina?
A. Detection of light
B. Regulation of pupil size
C. Focus of light
D. Production of tears
Question 14
Which of the following statements best describes the role of the hypothalamus in osmoregulation?
A. It regulates the release of hormones that stimulate thirst and hunger
B. It monitors the concentration of electrolytes and water in the blood
C. It controls the rate of urine production in response to changes in blood osmolality
D. It is responsible for the sensation of thirst
Question 15
A diagram of the human eye is shown below. What is the primary function of the lens?
A. To focus light on the retina
B. To detect light intensity
C. To produce tears for lubrication
D. To regulate pupil size

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