POST UTME LAUTECH 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The sense organ responsible for detecting changes in light intensity is the?
A. Eye
B. Ear
C. Nose
D. Tongue
Question 2
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 3
A 2.0 M solution of NaOH is mixed with a 2.0 M solution of HCl. What is the resulting pH?
A. 0
B. 1
C. 2
D. 3
Question 4
The nervous system of an organism is responsible for
A. Regulating body temperature
B. Controlling movement
C. Proces\sing sensory information
D. Producing hormones
Question 5
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 6
In a population of Drosophila melanogaster, the frequency of the recessive allele 'a' is 0.2. What is the probability that two randomly selected flies will both be homozygous recessive?
A. 0.04
B. 0.08
C. 0.16
D. 0.32
Question 7
In a certain e\cosystem, the population of rabbits grows according to the \logistic equation dP/dt = rP\( 1 - P/K \). If the initial population is 100 and the carrying capacity is 1000, what is the population after 5 years?
A. 500
B. 600
C. 700
D. 800
Question 8
The concept of natural selection is a fundamental principle in evolutionary bio\logy. Which of the following statements best describes the process of natural selection?
A. The process by which organisms adapt to their environment through genetic mutations.
B. The process by which organisms with favorable traits are more likely to survive and reproduce.
C. The process by which organisms with unfavorable traits are more likely to die off.
D. The process by which organisms adapt to their environment through environmental pressures.
Question 9
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 10
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 11
The process of excretion in humans involves the removal of waste products from the body. Which of the following organs plays a crucial role in the process of excretion?
A. Liver
B. Kidneys
C. Lungs
D. Skin
Question 12
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 13
The process by which an organism's genetic information is passed from one generation to the next is called
A. Mutation
B. Genetic Drift
C. Gene Expression
D. Heritability
Question 14
In a typical vertebrate, the epithelial lining of the small intestine is composed of which of the following types of cells?
A. Microfold cells
B. Goblet cells
C. Paneth cells
D. Enterocytes
Question 15
A 10% solution of glu\cose in water is diluted by adding 90% of water. What is the concentration of the resulting solution?
A. 5%
B. 7.5%
C. 10%
D. 12.5%

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