POST UTME COVENANT UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of the human nervous system is shown below. Which part of the brain is responsible for controlling voluntary movements?
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal Cord
Question 2
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.5
B. 0.25
C. 0.75
D. 0.33
Question 3
A diagram of the human nervous system is shown below. Which of the following structures is responsible for transmitting signals from the sensory receptors to the central nervous system?
A. A
B. B
C. C
D. D
Question 4
A diagram of a human kidney is shown below. Which of the following statements is true about the function of the nephrons in this kidney?
A. The nephrons filter waste products, such as urea and other nitrogenous compounds, from the blood.
B. The nephrons regulate the concentration of electrolytes, such as sodium and potassium, in the blood.
C. The nephrons produce hormones, such as erythropoietin and renin, that help regulate blood pressure.
D. The nephrons produce urine, which is excreted from the body through the ureters.
Question 5
The diagram below shows the structure of a plant cell. Which of the following is a characteristic of the cell wall?
A. It is composed of cellulose.
B. It is composed of chitin.
C. It is composed of peptidoglycan.
D. It is composed of lipids.
Question 6
A 35-year-old patient presents with symptoms of fatigue, weakness, and shortness of breath. Laboratory tests reveal a low hemoglobin level of 8 g/dL. Which of the following organs is primarily responsible for the production of hemoglobin?
A. Liver
B. Spleen
C. Bone Marrow
D. Kidneys
Question 7
A diagram of a human digestive system is shown below. Which of the following statements is true about the function of the pancreas in this system?
A. The pancreas produces digestive enzymes, such as amylase and lipase, that break down carbohydrates and fats.
B. The pancreas produces hormones, such as insulin and glucagon, that help regulate blood sugar levels.
C. The pancreas produces bile, which is stored in the gallbladder and released into the small intestine to aid in fat digestion.
D. The pancreas produces mucus, which helps protect the digestive tract from acid and enzymes.
Question 8
In a population of 1000 bacteria, 80% are resis\tant to a particular antibiotic. If 200 bacteria are randomly selected for treatment, what is the probability that at least 150 will be resis\tant to the antibiotic?
A. 0.25
B. 0.30
C. 0.35
D. 0.40
Question 9
A diagram of the human reproductive system is shown below. Which part of the female reproductive system is responsible for producing eggs?
A. Ovary
B. Fallopian Tube
C. Uterus
D. Vagina
Question 10
A 2.5 L flask contains 0.5 M glu\cose solution. If 10 mL of 1 M HCl is added to the solution, what is the new concentration of glu\cose?
A. 0.49 M
B. 0.51 M
C. 0.49 M
D. 0.51 M
Question 11
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the dominant allele 'A'?
A. 0.8
B. 0.6
C. 0.4
D. 0.2
Question 12
The process by which plants convert light energy into chemical energy is called?
A. Respiration.
B. Photosynthesis.
C. Transpiration.
D. Osmosis.
Question 13
A population of rabbits is growing at a rate of 20% per year. If the population is currently 1000, what will be the population after 5 years?
A. 1638
B. 2000
C. 2430
D. 3000
Question 14
A diagram of a plant's xylem and phloem tissues is shown below. Which of the following statements is true about the function of the xylem in this plant?
A. The xylem transports water and minerals from the roots to the leaves.
B. The xylem transports sugars and other organic compounds from the leaves to the roots.
C. The xylem transports gases, such as oxygen and carbon dioxide, between the roots and the leaves.
D. The xylem transports waste products, such as urea and other nitrogenous compounds, from the leaves to the roots.
Question 15
In the context of evolutionary bio\logy, what is the primary mechanism by which genetic variation is introduced into a population?
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection

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