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POST UTME NOUN 2018 Biology | Objective

Are you preparing for POST UTME NOUN exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2018 Biology (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1

In a eukaryotic cell, what is the primary function of the Golgi apparatus?

A. Protein synthesis

B. Cell signaling

C. Lipid synthesis

Correct D. Protein modification

Correct Answer: D

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Question 2

A diagram of a plant cell is shown below. Identify the organelle responsible for photosynthesis.

A. Mitochondria

Correct B. Chloroplast

C. Vacuole

D. Nucleus

Correct Answer: B

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Question 3

A diagram of a human nervous system is shown below. Identify the part of the brain responsible for controlling voluntary movements.

A. Cerebellum

Correct B. Cerebrum

C. Brainstem

D. Spinal cord

Correct Answer: B

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Question 4

A diagram of a human respiratory system is shown below. Identify the part of the system responsible for exchanging oxygen and carbon dioxide.

A. Trachea

B. Bronchi

C. Lungs

Correct D. Alveoli

Correct Answer: D

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Question 5

A diagram of a human circulatory system is shown below. Identify the part of the system responsible for pumping blood throughout the body.

A. Lungs

Correct B. Heart

C. Arteries

D. Veins

Correct Answer: B

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Question 6

In the context of evolutionary bio\logy, what is the primary mechanism driving the adaptation of populations to changing environments?

Correct A. Natural Selection

B. Genetic Drift

C. Gene Flow

D. Mutation

Correct Answer: A

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Question 7

A diagram of the human circulatory system is shown below. Identify the organ responsible for filtering waste products from the blood.

A. Heart

B. Lungs

Correct C. Kidneys

D. Liver

Correct Answer: C

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Question 8

In a population of 1000 individuals, 20% are heterozygous for a particular gene. What is the expected frequency of the dominant allele in the population?

A. 0.2

Correct B. 0.4

C. 0.6

D. 0.8

Correct Answer: B

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Question 9

A diagram of a plant cell is shown below. Identify the organelle responsible for photosynthesis.

A. Cell Wall

B. Vacuole

Correct C. Chloroplast

D. Mitochondria

Correct Answer: C

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Question 10

A diagram of a simple e\cosystem is shown below. Identify the producer in the e\cosystem.

Correct A. Plant

B. Herbivore

C. Carnivore

D. Decomposer

Correct Answer: A

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Question 11

In the context of cell division, what is the primary function of the centrioles in the mitotic spindle?

A. To organize the chromosomes into a metaphase plate

Correct B. To form the kinetochore microtubules

C. To regulate the separation of sister chromatids

D. To facilitate the movement of the mitotic spindle

Correct Answer: B

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Question 12

A researcher is studying the effects of pollution on a freshwater e\cosystem. Which of the following biomes is most likely to be affected?

A. Tropical rainforest

B. Temperate grassland

Correct C. Freshwater e\cosystem

D. Desert biome

Correct Answer: C

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Question 13

A diagram of the human eye is shown below. What is the primary function of the ciliary muscles?

Correct A. To focus light on the retina

B. To regulate the amount of light entering the eye

C. To move the lens

D. To detect color

Correct Answer: A

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Question 14

A diagram of the human circulatory system is shown below. What is the primary function of the pulmonary arteries?

A. To carry oxygenated blood from the lungs to the heart

Correct B. To carry deoxygenated blood from the heart to the lungs

C. To regulate blood pressure

D. To detect changes in blood pH

Correct Answer: B

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Question 15

A diagram of the human skeletal system is shown below. What is the primary function of the sternocleidomastoid muscle?

Correct A. To rotate the head

B. To flex the neck

C. To ext\end the neck

D. To rotate the torso

Correct Answer: A

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Question 16

In a eukaryotic cell, the process of mitosis is initiated by the breakdown of the nuclear envelope, resulting in the release of the chromosomes into the cytoplasm. Which of the following structures is responsible for the breakdown of the nuclear envelope?

A. Centrioles

Correct B. Nuclear lamina

C. Mitotic spindle

D. Cytoskeleton

Correct Answer: B

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Question 17

A plant root system consists of a primary root and lateral roots. Which of the following is a characteristic of the primary root?

Correct A. Primary root is the first root to emerge from the radicle

B. Primary root is the longest root in the root system

C. Primary root is the root that grows downward into the soil

D. Primary root is the root that grows upward into the air

Correct Answer: A

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Question 18

A microorganism is a type of organism that is microscopic in size. Which of the following is an example of a microorganism?

Correct A. Bacteria

B. Virus

C. Fungi

D. Algae

Correct Answer: A

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Question 19

The process of evolution is driven by the variation in traits among individuals in a population. Which of the following is an example of a trait that can vary among individuals in a population?

Correct A. Eye color

B. Height

C. Skin color

D. Hair color

Correct Answer: A

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Question 20

Asexual reproduction is a type of reproduction that involves the production of offspring without the involvement of gametes. Which of the following is an example of a method of asexual reproduction?

Correct A. Binary fission

B. Budding

C. Fragmentation

D. Parthenogenesis

Correct Answer: A

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Question 21

In asexual reproduction, what is the primary mechanism by which genetic variation is introduced into a population?

A. Mutation

B. Genetic drift

C. Gene flow

Correct D. Genetic recombination

Correct Answer: D

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Question 22

A plant cell has a cell wall, chloroplasts, and a large central vacuole. What is the primary function of the cell wall?

Correct A. To provide structural support

B. To regulate gas exchange

C. To synthesize proteins

D. To store water

Correct Answer: A

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Question 23

In a sexual reproduction process, what is the term for the fusion of two gametes to form a zygote?

A. Meiosis

B. Mitosis

Correct C. Fertilization

D. Gamete formation

Correct Answer: C

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Question 24

A cell has a nucleus, mitochondria, and a golgi apparatus. What is the primary function of the golgi apparatus?

A. To synthesize proteins

B. To regulate cell growth

Correct C. To modify and package proteins

D. To store genetic information

Correct Answer: C

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Question 25

In a photosynthetic process, what is the term for the light-dep\endent reactions?

A. Light-indep\endent reactions

B. Calvin cycle

Correct C. Light-dep\endent reactions

D. Photorespiration

Correct Answer: C

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