POST UTME IMS U 2025 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The nervous system of a vertebrate consists of the central nervous system (CNS) and the peripheral nervous system (PNS). Which of the following is a characteristic of the PNS?
A. It is responsible for transmitting signals to and from the CNS.
B. It is responsible for controlling voluntary movements.
C. It is responsible for regulating the body's autonomic functions.
D. It is responsible for proces\sing sensory information.
Question 2
The process of mitosis is essential for the growth and development of multicellular organisms. Which of the following stages of mitosis is characterized by the condensation of chromatin into visible chromosomes?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 3
A 1.5-L sample of a gas is collected over water at a temperature of 25°C and a pressure of 1 atm. If the vapor pressure of water at 25°C is 23.8 mmHg, what is the partial pressure of the gas?
A. 700 mmHg
B. 743.8 mmHg
C. 800 mmHg
D. 850 mmHg
Question 4
In a typical plant cell, the vacuole is responsible for maintaining the cell's osmotic balance and storing water-soluble waste products. However, in a cell undergoing rapid growth, the vacuole may be replaced by a large central vacuole. What is the primary function of the large central vacuole in a rapidly growing cell?
A. Storage of water-soluble waste products
B. Maintenance of the cell's osmotic balance
C. Production of cell wall components
D. Regulation of cell growth
Question 5
A 50-g sample of a subs\tance is burned in a bomb calorimeter. If the heat released is 250 J/g, what is the total heat released?
A. 10000 J
B. 12500 J
C. 15000 J
D. 20000 J
Question 6
In the context of classification of living things, what is the primary function of the kingdom level?
A. To group organisms based on their cell structure
B. To group organisms based on their body structure
C. To group organisms based on their metabolic processes
D. To group organisms based on their genetic makeup
Question 7
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
A. To synthesize ATP during photosynthesis
B. To store water and nutrients
C. To synthesize proteins during translation
D. To regulate cell growth and division
Question 8
A diagram of a human brain is shown below. What is the function of the structure labeled 'Z'?
A. To process visual information
B. To regulate body temperature
C. To control voluntary movements
D. To store and retrieve memories
Question 9
The human immune system is responsible for def\ending the body against pathogens. Which of the following types of white blood cells is responsible for engulfing and digesting foreign particles and microorganisms?
A. Lymphocytes
B. Macrophages
C. Neutrophils
D. Eo\sinophils
Question 10
A researcher is studying the effects of light on the growth of a plant. The researcher measures the growth of the plant at different light intensities and plots the data on a graph. What type of graph would the researcher most likely use to represent the data?
A. Bar graph
B. Line graph
C. Scatter plot
D. Histogram
Question 11
The transport system responsible for carrying oxygen and nutrients to the body's cells is the?
A. Circulatory System
B. Respiratory System
C. Digestive System
D. Nervous System
Question 12
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 13
A cell is placed in a solution with a pH of 7. If the cell membrane has a permeability coefficient of 1.5 x 10^-5 cm/s, what is the rate of diffusion of water across the membrane?
A. 2.5 x 10^-6 cm/s
B. 5.48 x 10^-6 cm/s
C. 8.5 x 10^-6 cm/s
D. 1.2 x 10^-5 cm/s
Question 14
A diagram of the human digestive system is shown below. Which part of the digestive system is responsible for absorbing nutrients from food?
A. Mouth
B. Esophagus
C. Stomach
D. Small intestine
Question 15
In a photosynthetic pathway, which of the following pigments is primarily responsible for absorbing light energy in the blue-violet region of the visible spectrum?
A. Chlorophyll a
B. Chlorophyll b
C. Carotenoids
D. Phycobiliproteins

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