POST UTME ACHIEVERS UNIVERSITY 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 5% solution of glu\cose in water is isotonic with a 2% solution of urea in water. What is the molarity of the glu\cose solution?
A. 0.05 M
B. 0.1 M
C. 0.15 M
D. 0.2 M
Question 2
The process by which the body removes waste products is known as?
A. Excretion
B. Osmoregulation
C. Homeostasis
D. Regulation of body temperature
Question 3
In a desert e\cosystem, the primary producers are primarily composed of which of the following?
A. Cacti
B. Succulents
C. Desert grasses
D. All of the above
Question 4
A plant grows in a controlled environment with a cons\tant temperature and humidity. Which of the following is a factor that could affect the plant's growth?
A. Light intensity
B. Water availability
C. Soil pH
D. Air circulation
Question 5
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 6
A researcher is studying the genetic basis of a particular trait in a population. Which of the following is an example of a genetic variation?
A. A change in the frequency of a particular allele
B. A change in the expression of a particular gene
C. A change in the DNA sequence of a particular gene
D. A change in the environment that affects gene expression
Question 7
The hormone that regulates the level of glu\cose in the blood is?
A. Insulin
B. Glucagon
C. Adrenaline
D. Thyroxine
Question 8
A diagram of a human eye is shown below. What is the function of the lens?
A. Regulates the amount of light entering the eye
B. Changes the shape of the eye to focus on objects
C. Detects light and s\ends signals to the brain
D. Produces tears to lubricate the eye
Question 9
A diagram of the human eye is shown below. What is the function of the part labeled 'C'?
A. to focus light
B. to re\fract light
C. to detect light
D. to absorb light
Question 10
In a tropical rainforest, the primary consumers are primarily composed of which of the following?
A. Herbivorous insects
B. Fruit-eating bats
C. Large carnivorous mammals
D. Decomposers
Question 11
A 2.5 kg block is attached to a horizontal, massless spring with a force cons\tant of 100 N/m. If the block is displaced by 0.15 m from its equilibrium position and released from rest, what is the maximum speed of the block?
A. 0.5 m/s
B. 1.0 m/s
C. 1.5 m/s
D. 2.0 m/s
Question 12
In a tropical rainforest, the presence of a large number of epiphytes such as orchids and ferns is an example of which eco\logical process?
A. Niche partitioning
B. Eco\logical succession
C. Symbiotic relationships
D. Competition for resources
Question 13
A study on the genetic variation of a population revealed that the frequency of the dominant allele is 0.6. If the population size is 1000, what is the expected number of individuals with the dominant phenotype?
A. 400
B. 480
C. 560
D. 640
Question 14
A 5-year-old child is brought to the doctor with symptoms of malnutrition. The child's height is 90 cm, and the child's weight is 12 kg. What is the child's body mass index (BMI)?
A. 12.5
B. 15.6
C. 18.7
D. 20.8
Question 15
A person has a genetic disorder that affects their ability to break down certain amino acids. Which of the following is a possible consequence of this disorder?
A. Increased risk of cancer
B. Increased risk of heart disease
C. Increased risk of neuro\logical disorders
D. Increased risk of gastrointestinal problems

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: