POST UTME VERITAS UNIVERSITY 2022 Biology | Objective

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Question 1
In the context of cell division, what is the primary function of the spindle fibers during anaphase?
A. To align the sister chromatids at the metaphase plate
Correct B. To separate the sister chromatids and move them to opposite poles of the cell
C. To form the cleavage furrow and initiate cytokinesis
D. To condense the chromatin and prepare it for metaphase

Correct Answer: B

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Question 2
A researcher is studying the osmoregulatory mechanisms of a desert-dwelling organism. Which of the following statements is true regarding the role of the kidneys in this process?
Correct A. The kidneys produce a high concentration of urine to conserve water
B. The kidneys produce a low concentration of urine to eliminate excess water
C. The kidneys produce a cons\tant concentration of urine regardless of the organism's water status
D. The kidneys have no role in osmoregulation in desert-dwelling organisms

Correct Answer: A

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Question 3
A diagram of a plant cell is shown below. What is the function of the structure labeled 'X'?
A. Site of protein synthesis
Correct B. Site of lipid synthesis
C. Site of carbohydrate synthesis
D. Site of DNA replication

Correct Answer: B

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Question 4
A researcher is studying the evolutionary history of a particular species. Which of the following statements is true regarding the process of natural selection?
A. Natural selection acts on the entire population, not just individual organisms
Correct B. Natural selection favors the survival and reproduction of individuals with favorable traits
C. Natural selection is a random process that does not favor any particular trait
D. Natural selection is a slow process that occurs over millions of years

Correct Answer: B

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Question 5
A diagram of the human eye is shown below. What is the function of the structure labeled 'Y'?
A. Detects light and s\ends signals to the brain
B. Focuses light onto the retina
C. Regulates the amount of light entering the eye
Correct D. Transmits visual signals from the retina to the brain

Correct Answer: D

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Question 6
The Hardy-Weinberg principle states that allele frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. However, this principle is often violated in real-world populations due to various factors. Which of the following is NOT a valid reason for the Hardy-Weinberg principle to be violated?
A. Genetic drift
B. Mutation
C. Gene flow
Correct D. Natural selection

Correct Answer: D

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Question 7
In a forest e\cosystem, the following food chain is observed: Grass → Insect → Frog → Snake. Which of the following is a correct statement about the energy flow in this food chain?
Correct A. Energy is lost at each trophic level
B. Energy is conserved at each trophic level
C. Energy is gained at each trophic level
D. Energy is not transferred between trophic levels

Correct Answer: A

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Question 8
The process of mitosis results in the production of two daughter cells that are genetically identical to the parent cell. Which of the following is a correct statement about the chromosomes in the daughter cells?
Correct A. The daughter cells have the same number of chromosomes as the parent cell
B. The daughter cells have half the number of chromosomes as the parent cell
C. The daughter cells have twice the number of chromosomes as the parent cell
D. The daughter cells have a different number of chromosomes than the parent cell

Correct Answer: A

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Question 9
The following diagram shows a cross-section of a plant root. Which of the following is a correct statement about the structure of the root?
A. The xylem is located on the outside of the root
B. The phloem is located on the inside of the root
Correct C. The root hair cells are located on the outside of the root
D. The root cap is located on the inside of the root

Correct Answer: C

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Question 10
The following equation represents the rate of photosynthesis: \( \text{rate} = k \times \text{light} \times \text{CO}_2 \). Which of the following is a correct statement about the factors that affect the rate of photosynthesis?
Correct A. Light intensity, CO2 concentration, and temperature all affect the rate of photosynthesis
B. Light intensity and CO2 concentration affect the rate of photosynthesis, but temperature does not
C. Light intensity and temperature affect the rate of photosynthesis, but CO2 concentration does not
D. Only light intensity affects the rate of photosynthesis

Correct Answer: A

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Question 11
In a tropical rainforest e\cosystem, the primary producers are primarily composed of which of the following?
A. Grasses and shrubs
Correct B. Trees and lianas
C. Cacti and succulents
D. Mosses and ferns

Correct Answer: B

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Question 12
The process by which plants convert light energy into chemical energy is known as?
Correct A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation

Correct Answer: A

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Question 13
The structure that connects the lungs to the heart is known as the?
A. Trachea
B. Bronchi
C. Pulmonary artery
Correct D. Pulmonary vein

Correct Answer: D

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Question 14
The process by which the body regulates its internal environment is known as?
Correct A. Homeostasis
B. Osmosis
C. Diffusion
D. Active transport

Correct Answer: A

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Question 15
The type of tissue that is found in the skin and is responsible for producing sweat is known as?
Correct A. Epithelial tissue
B. Connective tissue
C. Muscle tissue
D. Nervous tissue

Correct Answer: A

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Question 16
In the context of the human nervous system, what is the primary function of the cerebellum?
A. To process sensory information from the environment
B. To regulate body temperature
Correct C. To coordinate voluntary movements and maintain posture
D. To produce hormones that stimulate growth and development

Correct Answer: C

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Question 17
A researcher is studying the effects of a new medication on the human body. Which of the following organs is primarily responsible for metabolizing the medication?
Correct A. Liver
B. Kidneys
C. Pancreas
D. Spleen

Correct Answer: A

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Question 18
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 movement
C. To regulate pupil size
D. To produce tears

Correct Answer: A

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Question 19
A person has a genetic disorder that affects the production of insulin. Which of the following organs is primarily responsible for producing insulin?
Correct A. Pancreas
B. Liver
C. Kidneys
D. Spleen

Correct Answer: A

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Question 20
A diagram of the human brain is shown below. What is the function of the part labeled 'B'?
A. To process sensory information from the environment
B. To regulate body temperature
Correct C. To coordinate voluntary movements and maintain posture
D. To produce hormones that stimulate growth and development

Correct Answer: C

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Question 21
In the context of transport systems, what is the primary function of the xylem in plants?
Correct A. Transport of water and minerals from the roots to the leaves
B. Transport of sugars and other organic compounds produced by photosynthesis
C. Regulation of water potential and turgor pressure in plant cells
D. Maintenance of plant structure and support

Correct Answer: A

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Question 22
A diagram of the human nervous system is shown below. Which part of the brain is responsible for controlling voluntary movements?
Correct A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal cord

Correct Answer: A

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Question 23
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 body structure
C. To group organisms based on their metabolic processes
Correct D. To group organisms based on their genetic makeup

Correct Answer: D

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Question 24
A diagram of the human respiratory system is shown below. Which part of the system is responsible for exchanging oxygen and carbon dioxide?
A. Trachea
B. Bronchi
Correct C. Lungs
D. Diaphragm

Correct Answer: C

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Question 25
In the context of coordination, what is the primary function of the nervous system?
A. To regulate body temperature
Correct B. To control voluntary movements
C. To regulate water and electrolyte balance
D. To maintain homeostasis

Correct Answer: B

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