POST UTME NOUN 2017 Biology | Objective

Are you preparing for POST UTME NOUN exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2017 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In the xylem, water and minerals are transported from the roots to the leaves through the process of
Correct A. transpiration
B. osmosis
C. diffusion
D. active transport

Correct Answer: A

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Question 2
The nervous system coordinates the body's activities through the transmission of signals along
Correct A. nerve fibers
B. blood vessels
C. lymphatic vessels
D. arteries

Correct Answer: A

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Question 3
The process by which microorganisms cause disease is known as
A. infection
B. contamination
C. toxicity
Correct D. pathogenesis

Correct Answer: D

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Question 4
The xylem and phloem tissues in plants are responsible for the transport of
Correct A. water and minerals
B. sugars and amino acids
C. oxygen and carbon dioxide
D. nitrogen and phosphorus

Correct Answer: A

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Question 5
The process of cell division that results in the production of four daughter cells is known as
Correct A. mitosis
B. meiosis
C. binary fission
D. \endospore formation

Correct Answer: A

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Question 6
In the context of asexual reproduction, what is the primary advantage of budding in yeast?
A. Increased genetic diversity
Correct B. Efficient use of resources
C. Reduced risk of predation
D. Improved adaptation to environment

Correct Answer: B

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Question 7
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

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Question 8
In the context of eco\logy, what is the primary function of a keystone species?
A. Predation of herbivores
B. Competition with other species
C. Niche construction
Correct D. Trophic cascades

Correct Answer: D

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Question 9
A diagram of the human respiratory system is shown below. Which part of the system is responsible for gas exchange?
A. Trachea
B. Bronchi
Correct C. Lungs
D. Diaphragm

Correct Answer: C

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Question 10
In the context of growth and regulation, what is the primary function of the hypothalamus?
A. Regulation of body temperature
Correct B. Regulation of hunger and thirst
C. Regulation of sleep and wakefulness
D. Regulation of emotions

Correct Answer: B

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Question 11
The process of cellular respiration involves the breakdown of glu\cose to produce ATP. Which of the following is a byproduct of glycolysis?
Correct A. Pyruvate
B. Lactic acid
C. Ethanol
D. Carbon dioxide

Correct Answer: A

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Question 12
The diagram below represents a cross-section of a plant root. Which of the following structures is responsible for the absorption of water and minerals?
A. A
Correct B. B
C. C
D. D

Correct Answer: B

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Question 13
The Hardy-Weinberg principle states that the frequency of alleles in a population remains cons\tant from generation to generation. Which of the following is a condition necessary for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
C. No gene flow
Correct D. All of the above

Correct Answer: D

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Question 14
The diagram below represents a cross-section of a human kidney. Which of the following structures is responsible for the filtration of blood?
A. A
Correct B. B
C. C
D. D

Correct Answer: B

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Question 15
The process of mitosis involves the division of a eukaryotic cell into two daughter cells. Which of the following stages of mitosis is characterized by the condensation of chromosomes?
Correct A. Prophase
B. Metaphase
C. Anaphase
D. Telophase

Correct Answer: A

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Question 16
The process of meiosis in a diploid cell results in the production of four haploid daughter cells. Which of the following is a characteristic of these daughter cells?
A. They have the same number of chromosomes as the parent cell
Correct B. They have half the number of chromosomes as the parent cell
C. They have a mix of maternal and paternal chromosomes
D. They have a different number of chromosomes than the parent cell

Correct Answer: B

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Question 17
A population of a species is found in a region with a stable climate. Which of the following is a likely outcome for this population?
A. The population will increase exponentially
B. The population will decrease exponentially
Correct C. The population will remain stable
D. The population will fluctuate

Correct Answer: C

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Question 18
A plant cell has a large central vacuole that is responsible for storing water and nutrients. Which of the following is a function of the cell wall?
Correct A. To provide structural support to the cell
B. To regulate the movement of materials in and out of the cell
C. To store water and nutrients
D. To synthesize proteins

Correct Answer: A

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Question 19
A genetic disorder is caused by a mutation in a gene that codes for a protein involved in DNA replication. Which of the following is a likely outcome for an individual with this disorder?
Correct A. They will have a higher risk of developing cancer
B. They will have a lower risk of developing cancer
C. They will have a normal risk of developing cancer
D. They will not develop cancer

Correct Answer: A

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Question 20
A species of bird has a unique beak shape that allows it to eat a specific type of food. Which of the following is an example of adaptation?
Correct A. The bird's beak shape is an example of adaptation
B. The bird's ability to fly is an example of adaptation
C. The bird's ability to swim is an example of adaptation
D. The bird's ability to walk is an example of adaptation

Correct Answer: A

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Question 21
The process of asexual reproduction in which an organism splits into two or more parts, each of which grows into a new individual, is known as:
A. Budding
B. Fragmentation
C. Regeneration
Correct D. Binary Fission

Correct Answer: D

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Question 22
The diagram below shows the life cycle of a plant. Which stage is responsible for the production of spores?
A. Gametophyte
Correct B. Sporophyte
C. Zygote
D. Tetrad

Correct Answer: B

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Question 23
The graph below shows the relationship between the concentration of a substrate and the rate of enzyme activity. What is the name of the enzyme that catalyzes this reaction?
A. Amylase
Correct B. Lactase
C. Tryp\sin
D. Pep\sin

Correct Answer: B

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Question 24
The diagram below shows the structure of a cell. Which part is responsible for the synthesis of proteins?
A. Mitochondria
Correct B. Ribosome
C. Endoplasmic Reticulum
D. Golgi Apparatus

Correct Answer: B

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Question 25
The graph below shows the relationship between the concentration of a substrate and the rate of enzyme activity. What is the name of the enzyme that catalyzes this reaction?
A. Amylase
Correct B. Lactase
C. Tryp\sin
D. Pep\sin

Correct Answer: B

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