POST UTME OSUSTECH 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A patient with a damaged sense organ is unable to perceive a specific type of stimulus. Which of the following sense organs is most likely affected?
A. Eye
B. Ear
C. Nose
D. Tongue
Question 2
Asexual reproduction involves the production of offspring without the involvement of gametes. Which of the following organisms is an example of asexual reproduction?
A. Bacteria
B. Fungi
C. Plants
D. Animals
Question 3
A researcher is studying the transport of water through a plant. Which of the following types of tissue is responsible for the majority of water transport?
A. Xylem
B. Phloem
C. Cortex
D. Endodermis
Question 4
In a closed e\cosystem, the rate of photosynthesis is directly proportional to the rate of respiration. What is the likely effect on the e\cosystem's energy balance if the rate of photosynthesis increases by 20%?
A. The energy balance is maintained
B. The energy balance is disrupted
C. The energy balance increases
D. The energy balance decreases
Question 5
A diagram of the nephron is shown below. What is the primary function of the loop of Henle in the process of osmoregulation?
A. To increase the concentration of the filtrate by reabsorbing water and ions
B. To decrease the concentration of the filtrate by increa\sing the permeability of the collecting duct
C. To regulate the release of ADH to increase water reabsorption in the kidneys
D. To control the release of atrial natriuretic peptide to increase sodium excretion in the urine
Question 6
A plant exhibits a characteristic known as apomixis. What is the primary reproductive mechanism underlying this phenomenon?
A. Asexual Reproduction
B. Sexual Reproduction
C. Parthenogenesis
D. Endosymbiosis
Question 7
A patient is experiencing symptoms of a heart condition. Which of the following types of tissue is most likely affected?
A. Cardiac muscle
B. Smooth muscle
C. Skeletal muscle
D. Connective tissue
Question 8
In the context of sexual reproduction, what is the primary function of the acrosome reaction in the sperm cell?
A. To release enzymes that break down the zona pellucida
B. To facilitate the fusion of the sperm and egg membranes
C. To increase the motility of the sperm
D. To enhance the binding of the sperm to the zona pellucida
Question 9
In a typical human cell, the mitochondria are responsible for producing ATP through cellular respiration. What is the primary function of the mitochondria?
A. Protein synthesis
B. Cell signaling
C. Energy production
D. Cell division
Question 10
A patient is experiencing symptoms of a neuro\logical disorder. Which of the following types of neurons is most likely responsible for the symptoms?
A. Motor neurons
B. Sensory neurons
C. Interneurons
D. Glial cells
Question 11
A patient is diagnosed with a rare genetic disorder that affects the production of a specific enzyme. The enzyme is responsible for breaking down a particular type of sugar. What is the likely effect on the patient's body if the enzyme is not produced?
A. The patient will experience a decrease in blood sugar levels
B. The patient will experience an increase in blood sugar levels
C. The patient will experience a decrease in insulin levels
D. The patient will experience an increase in insulin levels
Question 12
A diagram of the human kidney is shown below. What is the primary function of the structure labeled 'A'?
A. Filtering waste from the blood
B. Regulating blood pressure
C. Producing hormones
D. Absorbing nutrients
Question 13
A diagram of the xylem is shown below. What is the primary function of the xylem in the process of transport?
A. To transport water and minerals from the roots to the leaves
B. To transport sugars and amino acids from the leaves to the roots
C. To regulate the release of auxins to increase cell elongation in the stem
D. To control the release of gibberellins to increase cell division in the roots
Question 14
A forest e\cosystem is characterized by a mix of deciduous and evergreen trees. What is the likely effect of a drought on the population of this forest e\cosystem?
A. Increased population of deciduous trees
B. Decreased population of evergreen trees
C. No effect on the population of either type of tree
D. Increased population of both types of trees
Question 15
A researcher studies the population dynamics of a species in a specific biome. Which of the following is a likely consequence of changes in the species' population size?
A. Predator-Prey Cycles
B. Competition for Resources
C. Niche Partitioning
D. Eco\logical Succession

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