POST UTME DELSU 2018 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A population of Drosophila melanogaster is being studied for its genetic variation. Which of the following types of genetic variation would be most difficult to detect u\sing morpho\logical characteristics?
A. Genetic drift
B. Mutation
C. Gene flow
D. Genetic variation due to allelic differences
Question 2
The process of photosynthesis in plants involves the conversion of
A. Carbon dioxide and water to glu\cose and oxygen
B. Glu\cose and oxygen to carbon dioxide and water
C. Carbon dioxide and glu\cose to water and oxygen
D. Water and oxygen to glu\cose and carbon dioxide
Question 3
A diagram shows a plant with a taproot and a stem with leaves. What is the function of the taproot?
A. To absorb water and nutrients from the soil
B. To transport water and nutrients to the leaves
C. To produce food for the plant
D. To support the plant's structure
Question 4
Photosynthesis in plants involves the conversion of light energy into chemical energy in the form of
A. Glu\cose
B. Starch
C. Protein
D. Fat
Question 5
A population of fruit flies is exposed to a toxic subs\tance that kills 20% of the population. What is the expected change in the population's allele frequency for the gene that codes for resis\tance to the toxin?
A. Increase
B. Decrease
C. No change
D. Stable
Question 6
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Mitochondria
B. Nucleus
C. Cell wall
D. Plastid
Question 7
A plant with the genotype 'Tt' is crossed with a plant with the genotype 'tt'. What is the probability that the offspring will have the genotype 'TT'?
A. 0.25
B. 0.5
C. 0.75
D. 1.0
Question 8
The process of mitosis in a cell results in the production of
A. 2 daughter cells
B. 4 daughter cells
C. 8 daughter cells
D. 16 daughter cells
Question 9
A diagram of the human circulatory system is shown below. Which of the following structures is responsible for the regulation of blood pressure?
A. The heart
B. The arteries
C. The capillaries
D. The veins
Question 10
The Hardy-Weinberg principle states that the frequency of alleles in a population will remain cons\tant from generation to generation in the absence of certain factors. Which of the following is a factor that can cause the frequency of alleles to change?
A. Mutation
B. Genetic drift
C. Gene flow
D. Natural selection
Question 11
The process of excretion in humans involves the removal of waste products from the body through the
A. Kidneys
B. Liver
C. Lungs
D. Skin
Question 12
A diagram of the human heart is shown below. What is the primary function of the atrioventricular (AV) node?
A. To regulate heart rate
B. To pump blood to the lungs
C. To pump blood to the body
D. To regulate blood pressure
Question 13
The diagram below shows a cross-section of a plant leaf. Which of the following structures is responsible for the absorption of carbon dioxide?
A. A
B. B
C. C
D. D
Question 14
A diagram of a human brain is shown below. Identify the part labeled 'C'.
A. Cerebrum
B. Cerebellum
C. Brainstem
D. Spinal cord
Question 15
The process of mitosis in a cell results in the production of
A. 2 daughter cells
B. 4 daughter cells
C. 8 daughter cells
D. 16 daughter cells

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: