POST UTME MOUNTAIN TOP UNIVERSITY 2023 Biology | Objective

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Question 1
In asexual reproduction, what is the primary mechanism by which genetic variation is introduced?
A. Mutation
B. Gene flow
C. Genetic drift
D. Genetic recombination
Question 2
In the context of evolutionary bio\logy, the concept of Δτεκνονευσ (ΔTeknoλελλευσ) refers to the process of genetic drift in a population. Which of the following statements is true about genetic drift?
A. Genetic drift is the process by which a population adapts to its environment.
B. Genetic drift is the process by which a population becomes isolated from other populations.
C. Genetic drift is the process by which a population's genetic variation is reduced over time.
D. Genetic drift is the process by which a population's genetic variation is increased over time.
Question 3
In the context of excretion and osmoregulation, what is the primary function of the kidneys?
A. To regulate body temperature
B. To synthesize proteins
C. To store genetic information
D. To filter waste and excess fluids from the blood
Question 4
A diagram of the human respiratory system is shown below. Which of the following structures is responsible for the exchange of oxygen and carbon dioxide?
A. A
B. B
C. C
D. D
Question 5
The diagram below shows a cross-section of a plant leaf. Identify the structure labeled 'F'?
Question 6
What is the primary function of the xylem in plants?
A. Transport of sugars
B. Transport of water and minerals
C. Support and storage
D. Protection from pathogens
Question 7
The diagram below represents a cross-section of a human eye. Which of the following structures is responsible for the accommodation of light?
A. The cornea
B. The iris
C. The lens
D. The retina
Question 8
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 genetic makeup
C. To group organisms based on their body structure
D. To group organisms based on their habitat
Question 9
The diagram below shows a cross-section of a plant root. Identify the structure labeled 'X'?
A. Root
B. Stem
C. Leaves
D. Soil
Question 10
The diagram below shows a cross-section of a human brain. Identify the structure labeled 'D'?
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal Cord
Question 11
In the context of evolutionary theories, what is the primary mechanism driving the adaptation of species to their environments?
A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation
Question 12
In a typical human cell, what is the primary function of the mitochondria?
A. To synthesize proteins
B. To store genetic information
C. To generate energy for the cell
D. To regulate cell growth
Question 13
The diagram below represents a cross-section of a human brain. Which of the following structures is responsible for the proces\sing of sensory information?
A. The cerebrum
B. The cerebellum
C. The brainstem
D. The spinal cord
Question 14
A diagram of the human eye is shown below. Identify the structure labeled 'B'?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 15
In a population of 100 individuals, 20 have the genotype BB, 40 have the genotype Bb, and 40 have the genotype bb. What is the frequency of the B allele?
A. 0.2
B. 0.4
C. 0.6
D. 0.8

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