POST UTME BELLS UNIVERSITY 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A population of 1000 bacteria has a mutation rate of 0.01. What is the probability that a particular gene will be lost from the population?
A. 0.01
B. 0.1
C. 0.5
D. 0.9
Question 2
A plant is placed in a controlled environment with a cons\tant temperature and humidity. What is the most likely effect on the plant's growth?
A. The plant will experience a decrease in growth rate
B. The plant will experience an increase in growth rate
C. The plant will experience no change in growth rate
D. The plant will experience a decrease in photosynthetic rate
Question 3
The process of meiosis results in the production of which type of cell?
A. Somatic cell
B. Germ cell
C. Tissue cell
D. Organ cell
Question 4
A plant's ability to regulate its water content is an example of which type of osmoregulation?
A. Isotonic
B. Hypotonic
C. Hypertonic
D. Osmoregulation
Question 5
The diagram below shows the structure of a kidney. Which of the following parts is responsible for filtering waste products from the blood?
A. Glomerulus
B. Proximal convoluted tubule
C. Distal convoluted tubule
D. Collecting duct
Question 6
A diagram of the human eye is shown below. What is the function of the part labeled 'A'?
A. To focus light on the retina
B. To regulate the amount of light entering the eye
C. To produce tears
D. To move the eye
Question 7
In a population of bacteria, the frequency of a particular gene is 0.6. If the population size is 1000, how many bacteria carry the gene?
A. 600
B. 400
C. 200
D. 100
Question 8
Which of the following types of classification is based on the presence or absence of a nucleus in cells?
A. Binary classification
B. Ternary classification
C. Quaternary classification
D. Prokaryotic vs. Eukaryotic classification
Question 9
In a tropical rainforest, the primary consumers are primarily composed of which of the following?
A. Herbivorous insects
B. Fruit-eating birds
C. Small mammals
D. Decomposers
Question 10
The diagram below shows the structure of a plant cell. Which of the following organelles is responsible for photosynthesis?
A. Mitochondria
B. Chloroplast
C. Vacuole
D. Nucleus
Question 11
The nervous system is responsible for which of the following functions?
A. Regulation of body temperature
B. Maintenance of homeostasis
C. Control of voluntary movements
D. All of the above
Question 12
A cell is placed in a solution containing a high concentration of glu\cose. What is the most likely outcome?
A. The cell will undergo mitosis
B. The cell will undergo meiosis
C. The cell will experience an increase in osmotic pressure
D. The cell will experience a decrease in osmotic pressure
Question 13
In a tropical rainforest, the primary consumers are primarily herbivores that feed on the leaves and fruits of the plants. What is the most likely reason for this adaptation?
A. To avoid competition with other herbivores for food resources
B. To reduce the risk of predation by carnivores
C. To increase their chances of survival in a competitive environment
D. To exploit the abundant food resources in the rainforest
Question 14
The process of mitosis results in the production of which type of cell?
A. Somatic cell
B. Germ cell
C. Tissue cell
D. Organ cell
Question 15
A diagram of a plant's transport system is shown below. Which of the following structures is responsible for the transport of water and minerals from the roots to the leaves?
A. Xylem sap
B. Phloem sap
C. Root hairs
D. Stomata

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