POST UTME ESUT 2024 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of the nervous system is shown below. What is the function of the structure labeled 'A'?
A. To transmit signals from the brain to the spinal cord
B. To transmit signals from the spinal cord to the brain
C. To regulate body temperature
D. To regulate blood pressure
Question 2
The xylem tissue in a plant is responsible for
A. Transporting water and minerals from the roots to the leaves
B. Producing sugars through photosynthesis
C. Regulating body temperature
D. Controlling movement
Question 3
The process by which an organism's genetic information is passed from one generation to the next is
A. Mutation
B. Genetic drift
C. Natural selection
D. Heritability
Question 4
A bacterium is placed in a nutrient-rich medium. What is the expected outcome of the experiment?
A. The bacterium will die.
B. The bacterium will grow and multiply.
C. The bacterium will remain stationary.
D. The bacterium will change color.
Question 5
A diagram of the human brain is shown below. What is the function of the part labeled B?
A. To control movement
B. To regulate body temperature
C. To process sensory information
D. To produce hormones
Question 6
A scientist is studying the effect of pH on the growth of a microorganism. Which of the following would be the most likely outcome if the pH of the medium is increased?
A. Increased growth rate
B. Decreased growth rate
C. No effect on growth rate
D. Increased mortality rate
Question 7
The human body has a unique system that allows it to maintain a stable internal environment despite changes in the external environment. This system is known as
A. Nervous System
B. Circulatory System
C. Respiratory System
D. Homeostatic System
Question 8
A plant is crossed with a plant that has a mutation in the 'R' gene. What is the probability that the offspring will have the 'Rr' genotype?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 9
The process by which the heart pumps blood throughout the body is known as
A. Cardiac Cycle
B. Respiratory Cycle
C. Circulatory Cycle
D. Cardiovascular Cycle
Question 10
A researcher is studying the effect of light intensity on the growth of radish plants. She measures the growth of the plants in a controlled environment with varying light intensities. The data is as follows: Light Intensity \( μmol/m²/s \) Growth (cm) 100 10 200 15 300 20 400 25 500 30 What is the correlation coefficient (r) between light intensity and growth?
A. 0.9
B. 0.95
C. 0.98
D. 0.99
Question 11
A researcher is studying the genetic variation of a population of rabbits. Which of the following genetic concepts would best explain the observed variation in fur color?
A. Genetic drift
B. Gene flow
C. Mutation
D. Natural selection
Question 12
In a typical plant cell, what is the primary function of the mitochondria?
A. Protein synthesis
B. Cell signaling
C. Energy production
D. Cell division
Question 13
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 14
The diagram below shows a cross-section of a plant root. Which part of the root is responsible for the absorption of water and minerals from the soil?
A. Xylem
B. Phloem
C. Cortex
D. Endodermis
Question 15
A cell is placed in a solution with a pH of 5.5. What is the concentration of hydrogen ions in the solution?
A. 10^{-5}
B. 10^{-5.5}
C. 10^{-6}
D. 10^{-7}

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