POST UTME SKYLINE UNIVERSITY 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A researcher is studying the population dynamics of a species of rabbit. The population growth rate is modeled by the \logistic equation \( \frac{dP}{dt} = rP \left\( 1 - \frac{P}{K} \right \). If the carrying capacity K is 1000 and the initial population is 100, what is the population size after 10 years?
A. 500
B. 750
C. 900
D. 950
Question 2
The process by which plants convert light energy into chemical energy is known as?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Evaporation
Question 3
What is the primary mechanism by which the human body regulates blood pH?
A. Buffering by hemoglobin
B. Excretion of excess hydrogen ions by the kidneys
C. Respiratory compensation by increa\sing ventilation
D. Metabolic compensation by increa\sing glu\cose metabolism
Question 4
A diagram of a human eye is shown below. What is the name of the structure labeled 'C'?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 5
A researcher is studying the effects of pH on enzyme activity. Which of the following types of eco\logical study would be most appropriate?
A. Experimental study
B. Correlational study
C. Descriptive study
D. Comparative study
Question 6
A cell has a volume of 1000 μm³. If the cell is divided into two equal parts, what is the volume of each part?
A. 500
B. 750
C. 1000
D. 1500
Question 7
The type of tissue found in the human brain that is responsible for transmitting nerve impulses is known as?
A. Nervous tissue
B. Muscular tissue
C. Epithelial tissue
D. Connective tissue
Question 8
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 9
The process by which water moves through a plant, from the roots to the leaves, is known as?
A. Transpiration
B. Respiration
C. Photosynthesis
D. Osmosis
Question 10
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. 0.36
B. 0.64
C. 0.44
D. 0.56
Question 11
In a desert e\cosystem, what type of organisms are typically found in the topmost layer of the soil?
A. Bacteria
B. Fungi
C. Algae
D. Lichens
Question 12
A diagram of a plant's root system is shown below. What is the name of the structure labeled 'A'?
A. Taproot
B. Fibrous root
C. Adventitious root
D. Lateral root
Question 13
A species of bird is found in a forest with a population size of 1000 individuals. If the population growth rate is 0.1 per year and the carrying capacity is 5000 individuals, what is the population size after 10 years?
A. 2000
B. 3000
C. 4000
D. 5000
Question 14
A researcher is studying the effects of light intensity on plant growth. Which of the following types of eco\logical study would be most appropriate?
A. Experimental study
B. Correlational study
C. Descriptive study
D. Comparative study
Question 15
A population of 1000 individuals has a 50% mortality rate. If the population is divided into two equal parts, what is the expected number of individuals in each part?
A. 500
B. 750
C. 1000
D. 1500

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