POST UTME MOUNTAIN TOP UNIVERSITY 2020 Biology | Objective

Are you preparing for POST UTME MOUNTAIN TOP UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2020 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
In a eukaryotic cell, the process of cell division that results in the production of four daughter cells is called
Correct A. Mitosis
B. Meiosis
C. Binary Fission
D. Endoreduplication

Correct Answer: A

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Question 2
The process by which plants convert light energy into chemical energy is called
A. Respiration
Correct B. Photosynthesis
C. Decomposition
D. Fermentation

Correct Answer: B

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Question 3
The diagram below shows a cross-section of a plant root. What is the function of the part labeled A?
Correct A. To absorb water and minerals from the soil
B. To transport water and minerals from the roots to the leaves
C. To transport sugars and other organic compounds from the leaves to the rest of the plant
D. To store food and water for the plant

Correct Answer: A

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Question 4
The process by which an organism's genetic information is passed from one generation to the next is called
A. Mutation
B. Genetic Drift
C. Gene Flow
Correct D. Heritability

Correct Answer: D

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Question 5
The diagram below shows a simple circuit. What is the function of the part labeled A?
Correct A. To provide a source of electrical energy
B. To control the flow of electrical current
C. To measure the voltage of the circuit
D. To convert electrical energy into another form of energy

Correct Answer: A

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Question 6
In a xylem vessel, what is the primary function of the lignin in the cell walls?
Correct A. To provide structural support to the vessel
B. To regulate water transport through the vessel
C. To facilitate the movement of minerals and nutrients
D. To seal the vessel and prevent water loss

Correct Answer: A

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Question 7
The process of osmoregulation in plants involves the movement of water and solutes across the plasma membrane. Which of the following is a key component of the osmoregulatory system?
Correct A. Aquaporins
B. Proton pumps
C. Ion channels
D. Mitochondria

Correct Answer: A

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Question 8
A patient is diagnosed with a bacterial infection. Which of the following is a characteristic feature of bacterial cell walls?
A. Presence of a nuclear envelope
B. Presence of a Golgi apparatus
Correct C. Presence of a cell wall
D. Presence of a mitochondria

Correct Answer: C

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Question 9
A person with a visual impairment is unable to see objects in their peripheral vision. Which of the following sense organs is responsible for detecting peripheral vision?
Correct A. Retina
B. Optic nerve
C. Cornea
D. Macula

Correct Answer: A

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Question 10
A plant is placed in a controlled environment with a cons\tant temperature and humidity. Which of the following is a characteristic feature of photosynthesis in this plant?
Correct A. Increased rate of photosynthesis
B. Decreased rate of photosynthesis
C. No change in rate of photosynthesis
D. Increased rate of respiration

Correct Answer: A

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Question 11
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
Correct A. 0.36
B. 0.64
C. 0.16
D. 0.04

Correct Answer: A

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Question 12
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
Correct A. 0.25
B. 0.5
C. 0.75
D. 0.9

Correct Answer: A

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Question 13
A nerve impulse travels down a neuron at a speed of 120 m/s. If the impulse is 2 cm long, how long does it take to travel the length of the impulse?
Correct A. 0.0016 s
B. 0.016 s
C. 0.16 s
D. 1.6 s

Correct Answer: A

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Question 14
A hormone is released from the pituitary gland and travels to the adrenal gland, where it stimulates the release of adrenaline. What type of coordination is involved in this process?
A. Nervous coordination
B. Hormonal coordination
Correct C. Both nervous and hormonal coordination
D. Neither nervous nor hormonal coordination

Correct Answer: C

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Question 15
A population of rabbits is growing at a rate of 20% per year. If the population is currently 1000, what will be the population after 5 years?
A. 1638
B. 1863
C. 2000
Correct D. 2200

Correct Answer: D

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Question 16
The Hardy-Weinberg principle states that allele and genotype frequencies in a population 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 17
In a population of 1000 individuals, the frequency of the dominant allele is 0.6. What is the frequency of the recessive allele?
A. 0.2
Correct B. 0.4
C. 0.6
D. 0.8

Correct Answer: B

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Question 18
A population of 500 individuals has a frequency of 0.7 for the dominant allele. If the Hardy-Weinberg principle holds, what is the frequency of the recessive allele?
Correct A. 0.3
B. 0.4
C. 0.5
D. 0.6

Correct Answer: A

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Question 19
A population of 1000 individuals has a frequency of 0.4 for the dominant allele. If the Hardy-Weinberg principle holds, what is the frequency of the recessive allele?
A. 0.2
Correct B. 0.3
C. 0.4
D. 0.5

Correct Answer: B

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Question 20
A population of 500 individuals has a frequency of 0.5 for the dominant allele. If the Hardy-Weinberg principle holds, what is the frequency of the recessive allele?
A. 0.2
B. 0.3
C. 0.4
Correct D. 0.5

Correct Answer: D

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Question 21
In a desert e\cosystem, a cactus plant has adapted to store water in its stems. Which of the following is a consequence of this adaptation?
Correct A. Increased water loss through transpiration
B. Enhanced photosynthesis
C. Reduced water storage capacity
D. Increased water absorption from the soil

Correct Answer: A

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Question 22
A neuron fires an action potential when the threshold potential is reached. What is the threshold potential?
A. +30mV
B. +50mV
Correct C. +70mV
D. +90mV

Correct Answer: C

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Question 23
In a tropical rainforest, the primary consumers are herbivores that feed on the producers. What is the role of these herbivores in the e\cosystem?
A. Decomposers
B. Primary producers
Correct C. Secondary consumers
D. Tertiary consumers

Correct Answer: C

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Question 24
A gene that codes for a protein with a specific function is an example of what type of gene?
Correct A. Structural gene
B. Regulatory gene
C. Oncogene
D. Tumor suppressor gene

Correct Answer: A

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Question 25
In a population of rabbits, the frequency of the dominant allele is 0.6. What is the frequency of the recessive allele?
A. 0.2
Correct B. 0.4
C. 0.6
D. 0.8

Correct Answer: B

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