POST UTME LEAD CITY UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The table below shows the results of a survey on the favorite colors of 100 students. What is the mode of the distribution?
A. blue
B. green
C. red
D. yellow
Question 2
A species of bird has a beak shape that is well-suited for cracking open seeds. However, this beak shape also makes it difficult for the bird to eat insects. What is an example of an adaptation that has resulted from this trade-off?
A. The bird's beak shape has evolved to become more pointed, allowing it to eat smaller insects
B. The bird's beak shape has evolved to become more robust, allowing it to crack open larger seeds
C. The bird's beak shape has remained the same, and it has developed a specialized tongue to eat insects
D. The bird's beak shape has evolved to become more flexible, allowing it to eat both seeds and insects
Question 3
In a population of 1000 individuals, 70% are heterozygous for a particular gene, 20% are homozygous dominant, and 10% are homozygous recessive. What is the genotype of the individual represented by the Punnett square below?
A. HH
B. hh
C. Hh
D. hh
Question 4
What is the term for the process by which plants release water vapor into the air?
A. Transpiration
B. Respiration
C. Photosynthesis
D. Translocation
Question 5
In the context of hormonal coordination, what is the primary function of the hypothalamus?
A. Regulation of body temperature
B. Stimulation of appetite
C. Regulation of hormone secretion
D. Inhibition of stress response
Question 6
In the context of respiratory physio\logy, what is the primary function of the diaphragm?
A. To regulate blood pressure
B. To facilitate gas exchange
C. To increase lung volume
D. To decrease lung volume
Question 7
A diagram of the human skeletal system is shown below. What is the function of the sternum?
A. To provide structural support for the spine
B. To facilitate breathing
C. To increase lung volume
D. To regulate blood pressure
Question 8
In the context of sexual reproduction, what is the primary function of the sperm cell?
A. To fertilize the egg cell
B. To provide nutrients to the developing embryo
C. To regulate the menstrual cycle
D. To produce hormones
Question 9
In the human body, what is the primary function of the digestive system?
A. Breakdown of food into nutrients
B. Absorption of nutrients into the bloodstream
C. Elimination of waste products
D. Regulation of body temperature
Question 10
What is the term for the process by which plants convert light energy into chemical energy?
A. Photosynthesis
B. Respiration
C. Transpiration
D. Translocation
Question 11
In the context of cell division, what is the primary function of the spindle fibers?
A. To separate chromosomes
B. To align chromosomes
C. To attach chromosomes to the spindle pole
D. To regulate cell cycle
Question 12
In the xylem transport system, what is the primary function of the tracheids?
A. Transport of water and minerals from the roots to the leaves
B. Transport of sugars and other organic compounds from the leaves to the rest of the plant
C. Storage of water and nutrients in the plant
D. Regulation of water potential in the plant
Question 13
A diagram of the human circulatory system is shown below. What is the function of the pulmonary veins?
A. To transport oxygenated blood from the lungs to the heart
B. To transport deoxygenated blood from the heart to the lungs
C. To regulate blood pressure
D. To increase lung volume
Question 14
What is the term for the movement of molecules from an area of high concentration to an area of low concentration?
A. Osmosis
B. Diffusion
C. Active transport
D. Passive transport
Question 15
A 2.5 L solution of 0.5 M NaCl is diluted to 5 L. What is the new concentration of NaCl?
A. 0.1 M
B. 0.2 M
C. 0.25 M
D. 0.5 M

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