POST UTME LAUTECH 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A certain species of plant has a photosynthetic rate of 5.2 mg CO2/h per leaf. If the plant has 12 leaves, what is the total photosynthetic rate of the plant?
A. 62.4 mg CO2/h
B. 62.4 mg CO2/min
C. 62.4 mg CO2/s
D. 62.4 mg CO2/day
Question 2
A diagram of the human nervous system is shown below. Which of the following structures is responsible for the transmission of nerve impulses?
A. A
B. B
C. C
D. D
Question 3
In the context of hormonal coordination, what is the primary function of the hypothalamic-pituitary-adrenal (HPA) axis?
A. Regulation of body temperature
B. Maintenance of blood pressure
C. Stimulation of the immune system
D. Regulation of electrolyte balance
Question 4
What is the term for the process by which an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic Drift
C. Natural Selection
D. Heritability
Question 5
The e\cosystem of a rainforest is characterized by a high level of
A. Biodiversity
B. Primary production
C. Decomposition
D. Nutrient cycling
Question 6
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 homozygous dominant genotype 'AA'?
A. 0.64
B. 0.36
C. 0.16
D. 0.04
Question 7
A population of rabbits is introduced to a new island. Over time, the population grows exponentially. Which of the following evolutionary theories best explains this phenomenon?
A. Natural selection
B. Genetic drift
C. Gene flow
D. Mutation
Question 8
A diagram of the human digestive system is shown below. Which of the following structures is responsible for the breakdown of proteins?
A. A
B. B
C. C
D. D
Question 9
A diagram of a human eye is shown below. What is the function of the structure labeled 'B'?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 10
A plant is placed in a solution with a high concentration of sucrose. Which of the following transport systems would be most active in this situation?
A. Symplast
B. Apoplast
C. Xylem
D. Phloem
Question 11
In the context of classification, what is the term for the process by which an organism is assigned to a particular taxonomic group?
A. Taxonomy
B. Phy\logeny
C. Classification
D. Identification
Question 12
In the context of gas exchange, what is the primary function of the alveolar-capillary membrane?
A. To regulate the amount of oxygen and carbon dioxide exchanged between the lungs and the bloodstream
B. To facilitate the diffusion of oxygen and carbon dioxide across the membrane
C. To maintain the pH balance of the blood
D. To regulate the amount of water in the lungs
Question 13
What is the term for the movement of water from the roots to the leaves of a plant?
A. Transpiration
B. Translocation
C. Osmosis
D. Diffusion
Question 14
The sense organ responsible for detecting changes in light intensity is the
A. Eye
B. Ear
C. Nose
D. Mouth
Question 15
A plant is placed in a controlled environment with a cons\tant temperature and humidity. Which of the following growth regulators would be most active in this situation?
A. Auxin
B. Gibberellin
C. Cytokinin
D. Ethylene

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