POST UTME REDEEMERS UNIVERSITY 2021 Biology | Objective

Are you preparing for POST UTME REDEEMERS UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2021 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 hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of fluid balance
Correct C. Response to stress and anxiety
D. Regulation of appetite and satiety

Correct Answer: C

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Question 2
Asexual reproduction in plants can occur through the process of
A. Budding
Correct B. Fragmentation
C. Runners
D. Rhizome

Correct Answer: B

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Question 3
The xylem tissue in plants is responsible for
Correct A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Storage of starch and proteins
D. Support and structure of the plant

Correct Answer: A

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Question 4
The diagram below represents a cross-section of a plant root. What is the function of the labeled structure?
Correct A. Transport of water and minerals from roots to leaves
B. Transport of sugars and amino acids from leaves to roots
C. Storage of starch and proteins
D. Support and structure of the plant

Correct Answer: A

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Question 5
The e\cosystem shown below is an example of a
A. Desert
B. Rainforest
Correct C. Grassland
D. Tundra

Correct Answer: C

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Question 6
In the context of evolutionary bio\logy, what is the primary mechanism by which genetic drift leads to the loss of genetic variation in a population?
A. Natural selection
B. Genetic mutation
Correct C. Genetic drift
D. Gene flow

Correct Answer: C

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Question 7
A population of Drosophila melanogaster is being studied for its genetic variation. The population has a mean wing length of 2.5 cm with a s\tandard deviation of 0.5 cm. If a random sample of 100 flies is taken from this population, what is the probability that the sample mean wing length will be greater than 3 cm?
Correct A. 0.05
B. 0.01
C. 0.005
D. 0.0005

Correct Answer: A

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Question 8
A diagram of the human kidney is shown below. Identify the structure labeled 'A'?
Correct A. Renal cortex
B. Renal medulla
C. Renal pelvis
D. Ureter

Correct Answer: A

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Question 9
A diagram of the human eye is shown below. Identify the structure labeled 'A'?
Correct A. Cornea
B. Iris
C. Lens
D. Retina

Correct Answer: A

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Question 10
A diagram of the human brain is shown below. Identify the structure labeled 'A'?
Correct A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal cord

Correct Answer: A

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Question 11
In the context of evolutionary theories, what is the primary mechanism by which genetic drift occurs?
A. Mutation
B. Gene flow
Correct C. Genetic drift
D. Natural selection

Correct Answer: C

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Question 12
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
Correct A. Photosynthesis
B. Cell signaling
C. Protein synthesis
D. Storage of nutrients

Correct Answer: A

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Question 13
In the context of microorganisms and diseases, what is the primary mechanism by which antibiotics work?
A. Inhibiting cell wall synthesis
Correct B. Interfering with protein synthesis
C. Disrupting cell membrane function
D. Inhibiting DNA replication

Correct Answer: B

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Question 14
A diagram of a human eye is shown below. What is the function of the structure labeled 'Y'?
A. Regulation of light entry
Correct B. Focus of light
C. Detection of light
D. Production of tears

Correct Answer: B

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Question 15
In the context of evolutionary theories and adaptations, what is the primary mechanism by which natural selection occurs?
A. Genetic drift
B. Gene flow
C. Mutation
Correct D. Natural selection

Correct Answer: D

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Question 16
In the context of evolutionary theory, what is the primary mechanism by which genetic drift leads to the loss of genetic variation in a population?
A. Genetic recombination
B. Mutation
C. Gene flow
Correct D. Genetic drift

Correct Answer: D

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Question 17
A researcher is studying the structure of a plant cell. Which of the following organelles is responsible for synthesizing proteins?
A. Mitochondria
B. Chloroplast
Correct C. Endoplasmic reticulum
D. Lysosome

Correct Answer: C

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Question 18
A bio\logist is studying the process of mitosis in a eukaryotic cell. Which stage 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 19
A researcher is studying the classification of living things. Which of the following kingdoms is characterized by the presence of cell walls made of chitin?
A. Animalia
B. Plantae
Correct C. Fungi
D. Protista

Correct Answer: C

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Question 20
A bio\logist is studying the process of photosynthesis in a plant cell. Which of the following organelles is responsible for capturing light energy?
Correct A. Chloroplast
B. Mitochondria
C. Endoplasmic reticulum
D. Lysosome

Correct Answer: A

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Question 21
In the context of hormonal coordination, what is the primary function of the hypothalamus?
A. Regulation of body temperature
B. Stimulation of appetite
Correct C. Regulation of hormone secretion
D. Inhibition of stress response

Correct Answer: C

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Question 22
A diagram of a plant cell is shown below. What is the function of the cell wall?
Correct A. Provides structural support
B. Regulates water balance
C. Facilitates cell division
D. Involved in photosynthesis

Correct Answer: A

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Question 23
In the context of microorganisms and diseases, what is the primary function of the immune system?
A. Production of antibodies
B. Activation of immune cells
Correct C. Elimination of pathogens
D. Regulation of inflammation

Correct Answer: C

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Question 24
A diagram of a human eye is shown below. What is the function of the retina?
Correct A. Detection of light
B. Regulation of pupil size
C. Focus of light
D. Production of tears

Correct Answer: A

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Question 25
In the context of growth and regulation, what is the primary function of the pituitary gland?
A. Regulation of growth hormone
B. Stimulation of appetite
Correct C. Regulation of hormone secretion
D. Inhibition of stress response

Correct Answer: C

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