POST UTME BSU 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram shows a plant with a mutation in the 'w' gene. What is the effect of this mutation on the plant's phenotype?
A. The plant will have white flowers.
B. The plant will have yellow flowers.
C. The plant will have red flowers.
D. The plant will have purple flowers.
Question 2
A diagram of the xylem and phloem tissues in a plant stem is shown below. Which of the following is a characteristic of the xylem tissue?
A. It transports sugars and other organic compounds
B. It transports water and minerals
C. It transports sugars and other organic compounds
D. It transports water and minerals
Question 3
In a tropical rainforest e\cosystem, the primary consumers are primarily composed of which of the following groups?
A. Herbivorous insects
B. Fruit-eating birds
C. Fungi-feeding insects
D. Small mammals
Question 4
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. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 5
Which of the following is an example of convergent evolution in the context of sense organs?
A. The development of wings in insects and birds
B. The formation of eyes in vertebrates and cephalopods
C. The development of limbs in tetrapods and fish
D. The formation of ears in mammals and birds
Question 6
A researcher is studying the effect of pH on the growth of Escherichia coli. The graph below shows the growth rate of the bacteria at different pH levels. What is the pH level at which the growth rate is maximum?
A. pH 7
B. pH 6
C. pH 5
D. pH 4
Question 7
A plant cell is placed in a solution with a higher concentration of solutes than the cell's cytoplasm. What will happen 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 undergo mitosis
Question 8
In the context of excretion and osmoregulation, what is the primary function of the kidneys?
A. Regulation of blood pressure
B. Maintenance of electrolyte balance
C. Removal of waste products from the body
D. Regulation of body temperature
Question 9
A diagram of a plant cell is shown below. Which of the following structures is responsible for photosynthesis?
A. Vacuole
B. Chloroplast
C. Mitochondrion
D. Nucleus
Question 10
A patient is diagnosed with a bacterial infection. Which of the following antibiotics is most likely to be effective against the infection?
A. Penicillin
B. Erythromycin
C. Ciprofloxacin
D. Vancomycin
Question 11
The process by which an organism grows and develops from a \single cell is known as
A. Mitosis
B. Meiosis
C. Differentiation
D. Embryogenesis
Question 12
A population of bacteria is growing according to the exponential growth model. The initial population is 100 bacteria, and the growth rate is 0.05 per generation. What is the population size after 10 generations?
A. 1000
B. 5000
C. 10000
D. 50000
Question 13
A diagram of a human eye is shown below. Which of the following structures is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 14
In a typical animal cell, the lysosome is responsible for the breakdown of cellular waste and foreign subs\tances. Which of the following statements is FALSE?
A. The lysosome is responsible for the breakdown of cellular waste and foreign subs\tances.
B. The lysosome is responsible for the synthesis of proteins.
C. The lysosome is responsible for the transport of proteins to the mitochondria.
D. The lysosome is responsible for the modification and packaging of proteins for secretion.
Question 15
A population of bacteria is growing exponentially. If the initial population size is 100 and the population size doubles every 2 hours, what is the population size after 6 hours?
A. 1600
B. 3200
C. 6400
D. 12800

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