POST UTME LASU 2019 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process by which plants convert light energy into chemical energy is known as
A. Respiration
B. Photosynthesis
C. Transpiration
D. Translocation
Question 2
In the human body, the process of excretion involves the removal of waste products through the
A. Kidneys
B. Liver
C. Lungs
D. Skin
Question 3
A population of a certain species of bird has a mean height of 20 cm. If the s\tandard deviation of the population is 2 cm, what is the probability that a randomly selected bird will have a height greater than 22 cm?
A. 0.25
B. 0.33
C. 0.50
D. 0.67
Question 4
The diagram below represents a simple circuit. Which of the following is the correct direction of current flow?
A. From A to B
B. From B to A
C. From A to C and then to B
D. From B to C and then to A
Question 5
The diagram below represents a cross-section of the human eye. Which of the following structures is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 6
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. U\sing the Hardy-Weinberg principle, calculate the frequency of the homozygous dominant genotype 'RR'.
A. 0.16
B. 0.24
C. 0.32
D. 0.40
Question 7
The process of osmoregulation in animals involves the regulation of the concentration of solutes in the body fluids. Which of the following is a mechanism used by the kidneys to regulate the concentration of solutes in the blood?
A. The kidneys filter the blood and remove excess solutes.
B. The kidneys produce hormones that regulate the concentration of solutes in the blood.
C. The kidneys regulate the amount of water in the body by adjusting the amount of urine produced.
D. The kidneys regulate the concentration of solutes in the blood by adjusting the amount of salt in the diet.
Question 8
A diagram of the xylem and phloem tissues in a plant stem is shown below. Which of the following statements is true about the xylem tissue?
A. It transports water and minerals from the roots to the leaves.
B. It transports sugars and other organic compounds from the leaves to the rest of the plant.
C. It is composed of dead cells.
D. It is found only in the roots of plants.
Question 9
A 35-year-old man presents to the primary care physician with a 1-year history of increa\sing fatigue, weakness, and shortness of breath. He has a history of hypertension and hyperlipidemia. A physical examination reveals a systolic ejection murmur. Which of the following is the most likely diagnosis?
A. Hypertrophic cardiomyopathy
B. Dilated cardiomyopathy
C. Aortic stenosis
D. Mitral regurgitation
Question 10
The process of cell division that results in the production of four daughter cells is known as
A. Mitosis
B. Meiosis
C. Binary Fission
D. Budding
Question 11
The cell membrane is semi-permeable, allowing certain subs\tances to pass through by
A. Osmosis
B. Diffusion
C. Active Transport
D. Passive Transport
Question 12
In the xylem, water and minerals are transported from the roots to the leaves through the process of
A. Transpiration Pull
B. Transpiration Push
C. Root Pressure
D. Capillary Action
Question 13
A patient has been diagnosed with a bacterial infection caused by a gram-negative bacterium. The patient's symptoms include fever, chills, and abdominal pain. Which of the following antibiotics is most likely to be effective against this type of infection?
A. Penicillin
B. Ciprofloxacin
C. Amoxicillin
D. Vancomycin
Question 14
The process of photosynthesis in plants involves the conversion of light energy into chemical energy. Which of the following is a byproduct of photosynthesis?
A. Glu\cose
B. Oxygen
C. Carbon Dioxide
D. Water
Question 15
The xylem is a type of vascular tissue found in plants that is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of the xylem?
A. It is composed of dead cells.
B. It is responsible for transporting sugars from the leaves to the roots.
C. It is found only in the roots of plants.
D. It is composed of living cells.

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