POST UTME LAUTECH 2022 Biology | Objective

Are you preparing for POST UTME LAUTECH exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2022 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In the context of evolutionary bio\logy, what is the primary mechanism driving the adaptation of populations to changing environments?
Correct A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation

Correct Answer: A

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Question 2
A diagram of a plant cell is shown below. Identify the organelle responsible for photosynthesis.
A. Mitochondria
Correct B. Chloroplast
C. Vacuole
D. Nucleus

Correct Answer: B

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Question 3
A diagram of the human digestive system is shown below. Identify the organ responsible for the breakdown of proteins.
A. Esophagus
Correct B. Stomach
C. Small Intestine
D. Large Intestine

Correct Answer: B

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Question 4
A diagram of a plant's xylem tissue is shown below. Identify the type of tissue responsible for transporting water and minerals from the roots to the leaves.
Correct A. Xylem
B. Phloem
C. Cortex
D. Endoderm

Correct Answer: A

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Question 5
A diagram of a human reproductive system is shown below. Identify the organ responsible for producing sperm in males.
Correct A. Testes
B. Epididymis
C. Vas Deferens
D. Prostate Gland

Correct Answer: A

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Question 6
The Hardy-Weinberg principle states that a population's allele and genotype frequencies will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
Correct C. No gene flow
D. No natural selection

Correct Answer: C

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Question 7
The diagram below shows a cross-section of a plant root. Which of the following tissues is responsible for the absorption of water and minerals from the soil?
A. Cortex
Correct B. Endodermis
C. Pericycle
D. Xylem

Correct Answer: B

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Question 8
The table below shows the classification of living organisms into different kingdoms. Which of the following organisms belongs to the kingdom Animalia?
A. Bacteria
B. Fungi
C. Protista
Correct D. Homo sapiens

Correct Answer: D

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Question 9
The diagram below shows the structure of a prokaryotic cell. Which of the following is a characteristic of prokaryotic cells?
A. Presence of a true nucleus
B. Presence of mitochondria
Correct C. Absence of a true nucleus
D. Presence of a cell wall

Correct Answer: C

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Question 10
The graph below shows the growth of a population over time. Which of the following is a characteristic of exponential growth?
A. Linear growth
Correct B. Exponential growth
C. S-shaped growth
D. Logistic growth

Correct Answer: B

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Question 11
In the context of cell division, what is the primary function of the spindle fibers during anaphase?
A. To separate the sister chromatids
B. To align the chromosomes at the metaphase plate
Correct C. To pull the chromosomes apart during anaphase
D. To form the nuclear envelope during telophase

Correct Answer: C

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Question 12
A diagram of the human eye is shown below. What is the function of the part labeled 'A'?
Correct A. To focus light on the retina
B. To detect light intensity
C. To regulate pupil size
D. To produce tears

Correct Answer: A

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Question 13
In the context of gas exchange, what is the primary function of the alveoli in the lungs?
Correct A. To exchange oxygen and carbon dioxide
B. To regulate breathing rate
C. To filter out dust particles
D. To produce surfac\tant

Correct Answer: A

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Question 14
A diagram of the cell cycle is shown below. What is the function of the part labeled 'B'?
A. To replicate DNA
Correct B. To separate chromosomes
C. To form the nuclear envelope
D. To condense chromosomes

Correct Answer: B

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Question 15
In the context of reproduction, what is the primary function of the sperm in fertilization?
A. To deliver the sperm to the egg
Correct B. To fertilize the egg
C. To produce testosterone
D. To regulate ovulation

Correct Answer: B

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Question 16
The process of meiosis results in the production of four haploid cells from a diploid cell. Which of the following is a characteristic of the cells produced during meiosis?
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 paternal and maternal chromosomes
D. They are genetically identical to the parent cell

Correct Answer: B

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Question 17
A population of bacteria is growing in a controlled environment. The growth rate of the population is measured over time and is found to be proportional to the current population size. What is the name of this type of growth?
A. Exponential growth
Correct B. Logistic growth
C. Linear growth
D. Sigmoid growth

Correct Answer: B

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Question 18
A genetic disorder is caused by a mutation in a specific gene. The mutation results in the substitution of a \single amino acid in a protein. Which of the following types of mutations is this an example of?
Correct A. Point mutation
B. Frameshift mutation
C. Deletion mutation
D. Insertion mutation

Correct Answer: A

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Question 19
A plant cell has a cell wall that is composed of cellulose. Which of the following is a characteristic of cellulose?
A. It is a type of protein
Correct B. It is a type of carbohydrate
C. It is a type of lipid
D. It is a type of nucleic acid

Correct Answer: B

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Question 20
A species of bird has a unique characteristic of having a beak that is shaped like a hook. Which of the following is a likely adaptation of this beak shape?
Correct A. It is used for catching fish
B. It is used for cracking seeds
C. It is used for eating insects
D. It is used for drinking water

Correct Answer: A

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Question 21
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population size is 1000, what is the expected number of homozygous recessive individuals?
Correct A. 180
B. 200
C. 220
D. 240

Correct Answer: A

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Question 22
A plant cell has a cell wall, a large central vacuole, and a small nucleus. Which of the following is NOT a characteristic of plant cells?
A. Cell wall
B. Large central vacuole
C. Small nucleus
Correct D. Mitochondria

Correct Answer: D

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Question 23
A diagram of a human respiratory system is shown below. What is the function of the alveoli?
Correct A. Gas exchange
B. Oxygen transport
C. Carbon dioxide transport
D. Nitrogen transport

Correct Answer: A

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Question 24
A population of bacteria is growing exponentially. If the initial population size is 100 and the population size after 3 hours is 1000, what is the growth rate?
A. 0.5
Correct B. 1.0
C. 1.5
D. 2.0

Correct Answer: B

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Question 25
A diagram of a human eye is shown below. What is the function of the lens?
Correct A. Focus light
B. Pupil dilation
C. Eye movement
D. Eye pressure

Correct Answer: A

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