POST UTME LAUTECH 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A 2.5 cm long muscle fiber is stimulated to contract. If the length of the muscle fiber is increased to 3.5 cm, what is the new length of the sarcomere?
A. 2.0
B. 2.5
C. 3.0
D. 3.5
Question 2
The process of photosynthesis in plants involves the conversion of light energy into chemical energy, which is stored in the form of
A. ATP
B. NADPH
C. Glu\cose
D. Water
Question 3
A diagram of the human eye is shown below. What is the function of the part labeled 'A'?
A. To focus light on the retina
B. To detect movement
C. To regulate pupil size
D. To produce tears
Question 4
The diagram below shows a titration setup. If 25 mL of 0.1 M HCl is added to 25 mL of 0.1 M NaOH, what is the pH of the resulting solution?
A. 7
B. 9
C. 11
D. 13
Question 5
The diagram below shows a graph of the growth of a population over time. Which of the following is the most likely cause of the population decline?
A. Predation
B. Disease
C. Environmental factors
D. Competition for resources
Question 6
The diagram below shows a cross between two Drosophila melanogaster individuals. If the genotype of the female parent is 'Aa' and the genotype of the male parent is 'AA', what is the probability that the offspring will be homozygous recessive?
A. 0.5
B. 0.25
C. 0.75
D. 0.33
Question 7
In a photosynthetic pathway, which enzyme catalyzes the conversion of ribulose-1,5-bisphosphate to 3-phosphoglycerate?
A. Ribulose-1,5-bisphosphate carboxylase/oxygenase
B. Phosphoglycerate kinase
C. Triosephosphate isomerase
D. Enolase
Question 8
A 2.5 cm long muscle fiber is stimulated to contract. If the length of the muscle fiber is increased to 3.5 cm, what is the new length of the sarcomere?
A. 2.0
B. 2.5
C. 3.0
D. 3.5
Question 9
A population of Drosophila melanogaster is being studied for its response to a mutation in the white gene. Which of the following would be the most likely effect of this mutation?
A. Increased pigmentation of the eyes
B. Decreased pigmentation of the eyes
C. No effect on pigmentation of the eyes
D. Increased body size
Question 10
In a tropical rainforest e\cosystem, the primary producers are typically
A. Herbivores
B. Decomposers
C. Producers
D. Omnivores
Question 11
The sense organ responsible for detecting changes in light intensity is the?
A. Eye
B. Ear
C. Nose
D. Tongue
Question 12
The process by which an organism's genetic information is altered by external factors is called
A. Mutation
B. Genetic Drift
C. Gene Expression
D. Epigenetics
Question 13
The classification of living organisms is based on their shared characteristics and evolutionary relationships. Which of the following kingdoms is characterized by the presence of cell walls made of chitin?
A. Animalia
B. Fungi
C. Plantae
D. Protista
Question 14
The hormone insulin is produced by the
A. Pituitary gland
B. Pancreas
C. Adrenal gland
D. Thyroid gland
Question 15
The diagram below shows a cross-section of a plant root. Which of the following is the function of the xylem tissue?
A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Support and storage of food
D. Protection from pathogens

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