POST UTME EKSU 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A plant has a genotype of Rr. If it is crossed with a plant of genotype rr, what is the probability that the offspring will have a genotype of Rr?
A. 0.25
B. 0.5
C. 0.75
D. 1
Question 2
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. 0.9
Question 3
The process of osmoregulation in the body involves the regulation of the concentration of solutes in the blood. Which of the following is a mechanism of osmoregulation?
A. Reabsorption of water in the renal tubules
B. Excretion of excess water in the urine
C. Ingestion of salt and water
D. All of the above
Question 4
A diagram of a plant cell is shown below. What is the function of the part labeled B?
A. To regulate water and ion balance
B. To provide structural support
C. To synthesize proteins
D. To store genetic information
Question 5
In a tropical rainforest e\cosystem, what is the primary mechanism by which nutrients are cycled between the biotic and abiotic components?
A. Decomposition
B. Photosynthesis
C. Respiration
D. Transpiration
Question 6
In a population of 100 individuals, 20 have the genotype 'BB', 40 have the genotype 'Bb', and 40 have the genotype 'bb'. What is the frequency of the dominant allele 'B'?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 7
The theory of evolution by natural selection was proposed by Charles Darwin. Which of the following is a key concept of this theory?
A. Survival of the fittest
B. Variation in populations
C. Adaptation to environment
D. All of the above
Question 8
A diagram of a human eye is shown below. What is the function of the part labeled A?
A. To focus light on the retina
B. To detect light and color
C. To regulate pupil size
D. To produce tears
Question 9
In a eukaryotic cell, what is the function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
C. Lipid metabolism
D. Protein modification and transport
Question 10
A gene has two alleles, A and a. The genotype of a plant is Aa. What is the probability that the plant will produce an offspring with the genotype AA?
A. 0.25
B. 0.5
C. 0.75
D. 1
Question 11
In genetics, 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
D. Heritability
Question 12
A plant's xylem is responsible for transporting water and minerals from the roots to the leaves. What is the primary mechanism by which this transport occurs?
A. Through the process of osmosis
B. Through the process of transpiration
C. Through the process of diffusion
D. Through the process of active transport
Question 13
A diagram of a human digestive system is shown below. What is the primary function of the structure labeled 'Y'?
A. Mechanical digestion
B. Chemical digestion
C. Absorption
D. Elimination
Question 14
In the classification of living things, which of the following is a characteristic of Archaea?
A. Cell wall is composed of peptidoglycan
B. Cell wall is composed of chitin
C. Cell membrane is composed of ether lipids
D. Cell membrane is composed of ester lipids
Question 15
In a eukaryotic cell, what is the primary function of the Golgi apparatus?
A. Protein synthesis
B. Cell signaling
C. Lipid synthesis and modification
D. Protein degradation

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: