POST UTME JOSEPH AYO BABALOLA UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A plant is placed in a solution with a high concentration of salt. What is the expected effect on the plant's growth?
A. Increased growth
B. Decreased growth
C. No effect on growth
D. Increased root growth
Question 2
Asexual reproduction in plants can occur through the production of?
A. Seeds
B. Spores
C. Buds
D. Rhizomes
Question 3
In the context of classification, what is the primary characteristic used to distinguish between prokaryotes and eukaryotes?
A. Cell wall composition
B. Presence of a nucleus
C. Cell membrane structure
D. Mitochondrial structure
Question 4
In the context of excretion and osmoregulation, what is the primary function of the kidneys in maintaining homeostasis?
A. To regulate blood pH levels
B. To control water balance in the body
C. To remove waste products from the blood
D. To regulate electrolyte balance
Question 5
A diagram of the human circulatory system is shown below. Identify the structure labeled A.
A. Aorta
B. Pulmonary artery
C. Lung
D. Heart
Question 6
In the context of coordination, what is the primary function of the hypothalamus in regulating body temperature?
A. To produce heat through shivering
B. To dissipate heat through sweating
C. To regulate body temperature through the hypothalamic thermostat
D. To produce cold through vasoconstriction
Question 7
A 30-year-old man presents with a 3-year history of progressive weakness and fatigue. His physical examination reveals a normal muscle strength, but his electromyogram shows a myopathic pattern. What is the most likely diagnosis?
A. Myasthenia gravis
B. Muscular dystrophy
C. Polymyositis
D. Lambert-Eaton syndrome
Question 8
The process by which plants make their own food from sunlight, water, and carbon dioxide is called
A. Photosynthesis
B. Respiration
C. Transpiration
D. Osmosis
Question 9
The human body is composed of several organ systems, each with its own unique functions and structures. Which of the following organ systems is responsible for the regulation of body temperature?
A. Nervous system
B. Circulatory system
C. Respiratory system
D. Integumentary system
Question 10
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain cons\tant from generation to generation in the absence of other evolutionary influences. Which of the following is a necessary condition for the Hardy-Weinberg principle to hold?
A. Random mating
B. No mutation
C. No gene flow
D. No natural selection
Question 11
In the process of meiosis, what is the purpose of cros\sing over?
A. To increase genetic variation
B. To decrease genetic variation
C. To increase the number of chromosomes
D. To decrease the number of chromosomes
Question 12
The study of the structure, behavior, and evolution of the whole organism is called
A. Embryo\logy
B. Histo\logy
C. Eco\logy
D. Taxonomy
Question 13
A plant cell contains a large central vacuole. What is the primary function of this vacuole?
A. To store water and nutrients
B. To synthesize proteins and other biomolecules
C. To regulate the plant's water balance
D. To maintain the plant's turgor pressure
Question 14
In a typical e\cosystem, what is the primary function of the producer population?
A. To break down dead organisms and recycle nutrients
B. To synthesize complex molecules from simple ones
C. To produce organic compounds from inorganic subs\tances
D. To regulate the population of other organisms
Question 15
Which of the following sense organs is responsible for detecting changes in blood pressure?
A. Eustachian tube
B. Aortic body
C. Carotid body
D. Vestibular apparatus

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