POST UTME IMS U 2021 Biology | Objective

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Question 1 View Details
In a eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
Correct C. Lipid synthesis and modification
D. Cell division

Correct Answer: C

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Question 2 View Details
A diagram of a plant's xylem and phloem is shown below. What is the primary function of the xylem?
Correct A. Transport of water and minerals
B. Transport of sugars and amino acids
C. Cell signaling
D. Cell division

Correct Answer: A

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Question 3 View Details
In a e\cosystem, what is the term for the process by which dead organisms are broken down into simpler subs\tances?
A. Photosynthesis
B. Respiration
Correct C. Decomposition
D. Fermentation

Correct Answer: C

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Question 4 View Details
A diagram of the human eye is shown below. What is the primary function of the retina?
Correct A. Detection of light
B. Focu\sing of light
C. Transmission of signals
D. Production of tears

Correct Answer: A

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Question 5 View Details
What is the term for the process by which an organism's genetic information is passed from one generation to the next?
A. Mutation
B. Genetic drift
C. Natural selection
Correct D. Heritability

Correct Answer: D

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Question 6 View Details
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. 0.2
B. 0.4
Correct C. 0.6
D. 0.8

Correct Answer: C

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Question 7 View Details
A 2.5 M solution of NaCl is diluted to 1 M. What is the new volume of the solution?
A. 2.5 L
Correct B. 5 L
C. 10 L
D. 20 L

Correct Answer: B

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Question 8 View Details
A plant has a root system with a radius of 5 cm and a height of 10 cm. If the plant is placed in a container with a radius of 10 cm, what is the new height of the plant?
A. 5 cm
B. 10 cm
Correct C. 15 cm
D. 20 cm

Correct Answer: C

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Question 9 View Details
A 50-g sample of a subs\tance is dissolved in 100 mL of water. What is the concentration of the solution in g/mL?
Correct A. 0.5 g/mL
B. 1 g/mL
C. 2 g/mL
D. 5 g/mL

Correct Answer: A

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Question 10 View Details
A population of E. coli has a mean generation time of 30 minutes. If the population is growing exponentially, what is the growth rate?
A. 0.02
B. 0.03
Correct C. 0.04
D. 0.05

Correct Answer: C

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Question 11 View Details
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 dominant allele 'A'?
Correct A. 0.8
B. 0.6
C. 0.4
D. 0.2

Correct Answer: A

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Question 12 View Details
A researcher is studying the effect of temperature on the rate of photosynthesis in a plant. She measures the rate of photosynthesis at different temperatures and plots the data on a graph. Which of the following types of graphs would she most likely use?
A. Line graph
B. Bar graph
Correct C. Scatter plot
D. Pie chart

Correct Answer: C

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Question 13 View Details
A species of bird has a unique mating behavior where the male bird builds a complex nest and presents it to the female. The female then chooses the male with the most elaborate nest. What is the evolutionary pressure driving this behavior?
Correct A. Natural selection
B. Artificial selection
C. Genetic drift
D. Gene flow

Correct Answer: A

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Question 14 View Details
A researcher is studying the effect of pH on the growth of a microorganism. She measures the growth rate of the microorganism at different pH levels and plots the data on a graph. Which of the following types of graphs would she most likely use?
A. Line graph
B. Bar graph
Correct C. Scatter plot
D. Pie chart

Correct Answer: C

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Question 15 View Details
A species of plant has a unique adaptation where it can change its leaf shape in response to changes in light intensity. What is the name of this adaptation?
Correct A. Plasticity
B. Homeostasis
C. Heterochrony
D. Phenotypic variation

Correct Answer: A

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Question 16 View Details
In the context of cell division, what is the primary function of the mitotic spindle?
Correct A. To separate chromosomes during anaphase
B. To align chromosomes during prophase
C. To form the nuclear envelope during telophase
D. To condense chromosomes during prophase

Correct Answer: A

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Question 17 View Details
Which of the following types of tissue is primarily responsible for the production of digestive enzymes in the small intestine?
A. Stratified squamous epithelium
Correct B. Simple columnar epithelium
C. Stratified cuboidal epithelium
D. Simple cuboidal epithelium

Correct Answer: B

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Question 18 View Details
A diagram of the human brain is shown below. Identify the part labeled 'A'.
Correct A. Cerebrum
B. Cerebellum
C. Brainstem
D. Frontal lobe

Correct Answer: A

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Question 19 View Details
A plant cell is shown below. Identify the part labeled 'B'.
A. Cell membrane
Correct B. Cell wall
C. Nucleus
D. Chloroplast

Correct Answer: B

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Question 20 View Details
The process of photosynthesis occurs in which of the following parts of a plant?
A. Roots
B. Stem
Correct C. Leaves
D. Flowers

Correct Answer: C

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Question 21 View Details
In the xylem, what is the primary mechanism by which water and minerals are transported from the roots to the leaves?
Correct A. Transpiration pull
B. Root pressure
C. Capillary action
D. Osmosis

Correct Answer: A

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Question 22 View Details
What is the primary function of the excretory system in humans?
A. To regulate body temperature
Correct B. To remove waste products from the body
C. To maintain fluid balance
D. To produce hormones

Correct Answer: B

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Question 23 View Details
In the classification of living things, what is the primary criterion used to distinguish between prokaryotes and eukaryotes?
A. Cell shape
B. Cell size
Correct C. Presence of a true nucleus
D. Cell wall composition

Correct Answer: C

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Question 24 View Details
What is the primary mechanism by which genetic variation is introduced into a population?
Correct A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection

Correct Answer: A

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Question 25 View Details
What is the primary function of the circulatory system in humans?
Correct A. To transport oxygen and nutrients to cells
B. To remove waste products from the body
C. To regulate body temperature
D. To produce hormones

Correct Answer: A

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