POST UTME BELLS UNIVERSITY 2020 Biology | Objective

Are you preparing for POST UTME BELLS 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, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
Correct C. Protein modification and transport
D. Cell division

Correct Answer: C

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Question 2
What is the process by which plants transport water and minerals from the roots to the leaves?
A. Respiration
B. Photosynthesis
Correct C. Transpiration
D. Osmosis

Correct Answer: C

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Question 3
In a desert e\cosystem, what is the primary role of the xerophyte plant?
A. To provide shade for other plants
B. To store water for other organisms
Correct C. To produce food through photosynthesis
D. To protect the soil from erosion

Correct Answer: C

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Question 4
What is the term for the movement of molecules from an area of high concentration to an area of low concentration?
Correct A. Diffusion
B. Osmosis
C. Active transport
D. Passive transport

Correct Answer: A

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Question 5
In a human cell, what is the primary function of the mitochondria?
A. Protein synthesis
B. Cell signaling
Correct C. Energy production
D. Cell division

Correct Answer: C

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Question 6
In the process of cellular respiration, what is the primary function of the electron transport chain?
Correct A. To generate ATP from ADP and Pi
B. To produce NADH and FADH2
C. To reduce oxygen to water
D. To increase the pH of the mitochondria

Correct Answer: A

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Question 7
Which of the following tissues is primarily responsible for the production of mucus in the respiratory system?
Correct A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Nervous tissue

Correct Answer: A

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Question 8
In the classification of living things, what is the primary function of the kingdom level?
Correct 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

Correct Answer: A

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Question 9
Which of the following types of nutrition is characterized by the breakdown of complex organic molecules into simpler ones?
A. Autotrophic nutrition
Correct B. Heterotrophic nutrition
C. Photosynthetic nutrition
D. Digestive nutrition

Correct Answer: B

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Question 10
In the transport system of plants, what is the primary function of the xylem?
Correct A. To transport water and minerals from the roots to the leaves
B. To transport sugars and other organic compounds from the leaves to the rest of the plant
C. To transport gases such as oxygen and carbon dioxide throughout the plant
D. To transport waste products away from the plant cells

Correct Answer: A

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Question 11
In a eukaryotic cell, which of the following organelles is responsible for the synthesis of proteins?
A. Mitochondria
Correct B. Endoplasmic reticulum
C. Ribosomes
D. Lysosomes

Correct Answer: B

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Question 12
A plant cell is placed in a solution with a high concentration of sucrose. What is the likely effect on the cell?
A. The cell will shrink due to water loss
Correct B. The cell will swell due to water uptake
C. The cell will remain unchanged
D. The cell will die

Correct Answer: B

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Question 13
In a sexual reproduction process, what is the term for the fusion of male and female gametes?
A. Meiosis
B. Mitosis
C. Fertilization
Correct D. Syngamy

Correct Answer: D

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Question 14
A diagram shows a plant with a \single cotyledon. What is the most likely type of plant?
A. Dicotyledonous plant
Correct B. Monocotyledonous plant
C. Gymnosperm
D. Angiosperm

Correct Answer: B

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Question 15
A diagram shows a human heart with a \single atrium. What is the most likely condition?
A. Heart failure
B. Cardiac arrest
Correct C. Atrial septal defect
D. Ventricular septal defect

Correct Answer: C

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Question 16
In the context of evolutionary bio\logy, what is the primary mechanism driving the process of speciation?
A. Genetic drift
B. Natural selection
C. Mutation
Correct D. Gene flow

Correct Answer: D

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Question 17
A diagram of a plant cell is shown below. What is the function of the structure labeled 'A'?
Correct A. Cell wall
B. Chloroplast
C. Mitochondria
D. Vacuole

Correct Answer: A

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Question 18
In a population of 1000 individuals, 70% are heterozygous for a particular gene. What is the expected frequency of the recessive allele in the population?
A. 0.05
Correct B. 0.10
C. 0.15
D. 0.20

Correct Answer: B

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Question 19
A diagram of a human respiratory system is shown below. What is the primary function of the structure labeled 'B'?
A. Trachea
Correct B. Bronchi
C. Diaphragm
D. Alveoli

Correct Answer: B

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Question 20
A diagram of a simple e\cosystem is shown below. What is the primary role of the producer in this e\cosystem?
A. Consumer
B. Decomposer
Correct C. Producer
D. Scavenger

Correct Answer: C

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Question 21
In a tropical rainforest, the presence of a large number of epiphytes such as orchids and ferns is an example of which eco\logical process?
A. Niche partitioning
B. Symbiotic relationship
C. Eco\logical succession
Correct D. Epiphytic colonization

Correct Answer: D

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Question 22
The structure of the human eye is an example of which type of tissue?
A. Connective tissue
Correct B. Epithelial tissue
C. Muscle tissue
D. Nervous tissue

Correct Answer: B

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Question 23
The process of gas exchange in plants occurs in which part of the leaf?
A. Stomatal cavity
B. Palisade mesophyll
Correct C. Spongy mesophyll
D. Xylem tissue

Correct Answer: C

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Question 24
The hormone responsible for regulating the growth and development of plants is?
Correct A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene

Correct Answer: A

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Question 25
The process of cell division in which the chromosomes are not visible is?
A. Mitosis
B. Meiosis
Correct C. Endoreduplication
D. Amphimixis

Correct Answer: C

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