POST UTME NILE UNIVERSITY 2023 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The process of photosynthesis occurs in which of the following parts of a plant?
A. Roots
B. Stem
C. Leaves
D. Flowers
Question 2
The process by which an organism's genetic information is passed from one generation to the next is known as
A. Mutation
B. Genetic Drift
C. Gene Flow
D. Heritability
Question 3
A diagram of the human eye is shown below. Which part of the eye is responsible for detecting light?
A. Cornea
B. Iris
C. Retina
D. Lens
Question 4
Asexual reproduction in plants can occur through the process of
A. fragmentation
B. vegetative propagation
C. mutation
D. hybridization
Question 5
A diagram of the human respiratory system is shown below. What is the primary function of the alveoli?
A. Exchange of oxygen and carbon dioxide
B. Production of mucus
C. Regulation of body temperature
D. Maintenance of blood pressure
Question 6
In a eukaryotic cell, 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. Endoreduplication
Question 7
The diagram below shows a cross-section of a nerve cell. Identify the part labeled 'A'.
A. D\endrite
B. Axon
C. Cell Body
D. Myelin Sheath
Question 8
A plant has a stomatal density of 100 stomata cm-2. If the stomatal index is 0.5, what is the total leaf area?
A. 100
B. 150
C. 200
D. 250
Question 9
In a population of 1000 bacteria, 80% are resis\tant to antibiotic X. If 200 bacteria are randomly selected for treatment, what is the probability that at least 150 will be resis\tant to antibiotic X?
A. 0.95
B. 0.90
C. 0.85
D. 0.80
Question 10
A plant has a photosynthetic rate of 10 μmol CO2 s-1. If the light intensity is increased by a factor of 4, what is the new photosynthetic rate?
A. 20
B. 30
C. 40
D. 50
Question 11
The type of symbiotic relationship in which one organism benefits and the other is harmed is known as
A. Mutualism
B. Commensalism
C. Parasitism
D. Predation
Question 12
The diagram below shows a simple microscope. Identify the part labeled 'B'.
A. Eyepiece
B. Objective Lens
C. Stage
D. Condenser
Question 13
A researcher is studying the effects of climate change on the distribution of species in a particular e\cosystem. Which of the following biomes is most likely to be affected by climate change?
A. Tropical rainforest
B. Temperate grassland
C. Arctic tundra
D. Desert
Question 14
A 2.0 L flask contains 1.5 atm of O2 and 0.5 atm of CO2 at 25°C. What is the partial pressure of O2?
A. 0.5
B. 1.0
C. 1.5
D. 2.0
Question 15
A 50-year-old man has a blood pressure of 140/90 mmHg. His resting heart rate is 70 beats per minute. What is his cardiac output?
A. 3.0
B. 4.0
C. 5.0
D. 6.0

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