POST UTME COVENANT UNIVERSITY 2024 Biology | Objective

Are you preparing for POST UTME COVENANT UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2024 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 known as
Correct A. Mitosis
B. Meiosis
C. Binary Fission
D. Endoreduplication

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2
The process by which plants convert light energy into chemical energy is known as
Correct A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3
The diagram below shows a cross-section of a plant root. What is the function of the part labeled A?
A. To anchor the plant in the soil
Correct B. To absorb water and minerals from the soil
C. To produce hormones that regulate plant growth
D. To store food for the plant

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4
The process by which an organism's genetic information is passed from one generation to the next is known as
A. Heritability
Correct B. Inheri\tance
C. Mutation
D. Genetic Drift

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5
The diagram below shows a simple e\cosystem. What is the role of the organism labeled A in this e\cosystem?
A. Primary consumer
B. Decomposer
Correct C. Producer
D. Omnivore

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6
In the context of evolutionary theories, what is the primary mechanism driving the adaptation of species to their environments?
Correct A. Natural Selection
B. Genetic Drift
C. Gene Flow
D. Mutation

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7
A diagram of the human circulatory system is shown below. Which of the following structures is responsible for the regulation of blood pressure?
Correct A. A
B. B
C. C
D. D

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8
The following graph shows the relationship between the concentration of a substrate and the rate of enzyme activity. What is the name of the enzyme kinetics model that best describes this relationship?
Correct A. Michaelis-Menten Model
B. Lineweaver-Burk Plot
C. Eadie-Hofstee Plot
D. Hanes-Woolf Plot

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9
A diagram of the xylem tissue is shown below. Which of the following structures is responsible for the transport of water and minerals from the roots to the leaves?
Correct A. A
B. B
C. C
D. D

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10
The following equation represents the rate of photosynthesis: \( \text{Rate} = \frac{k cdot \text{Light} cdot \text{CO}_2}{\text{Temperature}} \). What is the value of the cons\tant k?
A. 0.5
Correct B. 1.0
C. 2.0
D. 3.0

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 11
In a population of Drosophila melanogaster, the frequency of the recessive allele 'b' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'B'?
A. 0.1
B. 0.2
C. 0.3
Correct D. 0.8

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 12
A 2.5 L flask contains 0.5 mol of an ideal gas at 27°C. What is the pressure of the gas?
A. 100000
Correct B. 101325
C. 102650
D. 103975

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 13
A plant cell has a cell wall, a large central vacuole, and a small nucleus. What is the primary function of the cell wall?
Correct A. to provide structural support
B. to regulate the movement of materials
C. to synthesize proteins
D. to store genetic information

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 14
A 0.5 M solution of NaCl is prepared by dissolving 28.35 g of NaCl in 1 L of water. What is the concentration of the solution in mol/L?
A. 0.25
Correct B. 0.5
C. 0.75
D. 1

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 15
A 1.5 L flask contains 0.3 mol of an ideal gas at 37°C. What is the pressure of the gas?
A. 100000
B. 101325
C. 102650
Correct D. 103975

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 16
A study on the genetic variation of a population found that the frequency of the recessive allele 'a' is 0.2. If the population size is 1000 and the Hardy-Weinberg principle holds, what is the expected frequency of the homozygous recessive genotype 'aa'?
Correct A. 0.04
B. 0.08
C. 0.16
D. 0.32

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 17
A researcher is studying the effect of pH on the growth of E. coli. The researcher notices that the bacteria grow best at a pH of 7.5. What is the likely reason for this?
Correct A. The bacteria have an optimal pH for growth
B. The bacteria are sensitive to acidic environments
C. The bacteria are sensitive to basic environments
D. The bacteria have a unique metabolic pathway

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 18
A population of rabbits is growing according to the \logistic growth model. The initial population size is 100, and the carrying capacity is 1000. If the growth rate is 0.5, what is the population size after 5 generations?
A. 500
B. 750
C. 900
Correct D. 1000

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 19
A study on the effect of temperature on the activity of an enzyme found that the enzyme is most active at a temperature of 37°C. What is the likely reason for this?
Correct A. The enzyme has an optimal temperature for activity
B. The enzyme is sensitive to high temperatures
C. The enzyme is sensitive to low temperatures
D. The enzyme has a unique metabolic pathway

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 20
A population of bacteria is growing according to the exponential growth model. The initial population size is 100, and the growth rate is 0.2. What is the population size after 5 generations?
A. 1000
B. 2000
C. 4000
Correct D. 8000

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 21
In the context of eco\logy, what is the primary function of a "keystone species" in a given e\cosystem?
A. To occupy a unique eco\logical niche
Correct B. To have a disproportionate impact on the environment
C. To be a primary consumer in the food chain
D. To be a top predator in the food chain

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 22
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
Correct C. Retina
D. Lens

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 23
In the context of respiration, what is the primary function of the mitochondria?
Correct A. To produce ATP through cellular respiration
B. To store energy in the form of glycogen
C. To break down glu\cose to produce energy
D. To synthesize proteins from amino acids

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 24
A diagram of a plant cell is shown below. Which part of the cell is responsible for photosynthesis?
A. Nucleus
B. Mitochondria
Correct C. Chloroplast
D. Vacuole

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 25
In the context of cell division, what is the primary function of the spindle fibers?
Correct A. To separate chromosomes during mitosis
B. To synthesize DNA during interphase
C. To break down proteins during apoptosis
D. To repair damaged DNA during interphase

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub:
Chat with Support