POST UTME OAU 2022 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The structure that connects the phloem and xylem tissues in a plant is known as
A. Cortex
B. Endodermis
C. Pericycle
D. Phloem-Xylem Bundle
Question 2
A diagram of a cell's mitotic spindle is shown below. What is the function of the mitotic spindle?
A. Separating the chromosomes during cell division.
B. Forming the new cell membrane.
C. Regulating the cell cycle.
D. Producing the cytoplasm.
Question 3
A researcher is studying the genetic basis of a disease that affects a specific population. Which of the following genetic principles would be most relevant to this study?
A. The Hardy-Weinberg principle
B. The concept of genetic drift
C. The principle of natural selection
D. The concept of gene flow
Question 4
A researcher is studying the genetic basis of a disease that affects a specific population. Which of the following genetic principles would be most relevant to this study?
A. The Hardy-Weinberg principle
B. The concept of genetic drift
C. The principle of natural selection
D. The concept of gene flow
Question 5
The type of connective tissue that provides support and structure to the body is known as
A. Adipose Tissue
B. Bone Tissue
C. Cartilage Tissue
D. Blood Tissue
Question 6
The process by which the kidneys remove waste products from the blood is known as
A. Filtration
B. Reabsorption
C. Secretion
D. Osmosis
Question 7
A 5% solution of glu\cose in water has a density of 1.05 g/mL. If 250 mL of this solution is diluted to 1000 mL, what is the concentration of glu\cose in the final solution?
A. 2.625%
B. 3.125%
C. 4.375%
D. 5.625%
Question 8
A diagram of a chemical reaction is shown below. Identify the type of reaction.
A. Synthesis reaction
B. Decomposition reaction
C. Replacement reaction
D. Combination reaction
Question 9
In a certain species of plant, the ratio of the number of chloroplasts to the number of mitochondria is 3:2. If the plant has 120 chloroplasts, how many mitochondria does it have?
A. 80
B. 100
C. 120
D. 140
Question 10
A plant cell is placed in a solution with a high concentration of salt. What happens to the cell?
A. The cell will swell and eventually burst.
B. The cell will shrink and lose water.
C. The cell will remain unchanged.
D. The cell will grow and divide.
Question 11
A diagram of a human circulatory system is shown below. What is the primary function of the coronary arteries?
A. To regulate the movement of ions
B. To synthesize proteins
C. To store genetic information
D. To supply oxygenated blood to the heart muscle
Question 12
A 2 kg block of metal is heated from 20°C to 80°C. If the specific heat capacity of the metal is 400 J/kg°C, what will be the energy transferred to the metal?
A. 800 J
B. 1600 J
C. 2400 J
D. 3200 J
Question 13
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Stimulation of the immune system
C. Maintenance of homeostasis
D. Regulation of appetite and satiety
Question 14
In the context of respiratory physio\logy, what is the primary function of the parasympathetic nervous system in regulating breathing rate?
A. To increase the rate of breathing
B. To decrease the rate of breathing
C. To regulate the depth of breathing
D. To control the rate of gas exchange
Question 15
A diagram of a human eye is shown below. What is the function of the structure labeled 'Y'?
A. Detects light
B. Focuses light
C. Transmits visual signals
D. Regulates pupil size

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