POST UTME BABCOCK UNIVERSITY 2017 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram of a plant's xylem is shown below. What is the primary function of the xylem in this plant?
A. To transport water and minerals from the roots to the leaves
B. To transport sugars and other organic compounds from the leaves to the roots
C. To provide structural support to the plant
D. To regulate the plant's water balance
Question 2
A diagram of the human circulatory system is shown below. What is the function of the pulmonary valve?
A. To regulate blood flow from the heart to the lungs
B. To regulate blood flow from the lungs to the heart
C. To regulate blood flow from the heart to the aorta
D. To regulate blood flow from the aorta to the heart
Question 3
The process of photosynthesis in plants involves the conversion of light energy into chemical energy, which is stored in the form of
A. ATP and NADPH
B. Glu\cose and oxygen
C. Water and carbon dioxide
D. Starch and sucrose
Question 4
In a population of Drosophila melanogaster, the frequency of the recessive allele 'r' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the expected frequency of the homozygous dominant genotype?
A. 0.36
B. 0.64
C. 0.16
D. 0.48
Question 5
In the context of eco\logy, what is the primary function of a keystone species?
A. To regulate the population of other species
B. To provide a source of food for other species
C. To create a habitat for other species
D. To influence the structure of its e\cosystem
Question 6
A solution containing 0.1 M NaCl is added to a solution containing 0.1 M KNO3. What is the expected pH of the resulting solution?
A. 4.5
B. 5.5
C. 6.5
D. 7.5
Question 7
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. If the population is in Hardy-Weinberg equilibrium, what is the frequency of the homozygous dominant genotype 'AA'?
A. 0.64
B. 0.36
C. 0.16
D. 0.04
Question 8
A diagram of the human digestive system is shown below. Which of the following structures is responsible for the absorption of nutrients?
A. A
B. B
C. C
D. D
Question 9
A cell is in the process of mitosis. Which stage of mitosis is characterized by the condensation of chromosomes and the formation of the spindle apparatus?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Question 10
In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, which is triggered by the activation of the
A. Spindle fibers
B. Centrioles
C. Nuclear envelope
D. Mitotic spindle
Question 11
A diagram of the human \endocrine system is shown below. Which of the following structures is responsible for the production of insulin?
A. A
B. B
C. C
D. D
Question 12
A diagram of a human eye is shown below. What is the primary function of the retina in this eye?
A. To focus light onto the lens
B. To detect light and transmit signals to the brain
C. To regulate the amount of light entering the eye
D. To provide structural support to the eye
Question 13
The type of tissue that provides support and structure to the body is called?
A. Epithelial Tissue
B. Connective Tissue
C. Muscle Tissue
D. Nervous Tissue
Question 14
A 2.5 L flask contains 0.5 mol of an ideal gas at 25°C. If 1.0 mol of the gas is added to the flask, what is the new pressure of the gas?
A. 2.5 atm
B. 3.0 atm
C. 4.0 atm
D. 5.0 atm
Question 15
The reproductive strategy of an organism that produces offspring that are genetically identical to the parent is
A. Asexual reproduction
B. Sexual reproduction
C. Parthenogenesis
D. Apomixis

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