POST UTME EKSU 2021 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
In the context of the human visual system, what is the primary function of the optic nerve?
A. To transmit visual information from the retina to the brain
B. To regulate the amount of light entering the eye
C. To focus light onto the retina
D. To detect changes in color and brightness
Question 2
A diagram of a plant cell is shown below. Identify the part labeled 'A'.
A. Nucleus
B. Mitochondria
C. Chloroplast
D. Vacuole
Question 3
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 4
A plant cell is placed in a solution with a high concentration of sucrose. What will happen to the cell?
A. The cell will shrink due to water loss
B. The cell will swell due to water uptake
C. The cell will remain unchanged
D. The cell will burst due to osmotic pressure
Question 5
A species of plant has a photosynthetic rate of 10 mg CO2 per hour. If the light intensity is increased by 50%, what is the new photosynthetic rate?
A. 5
B. 10
C. 15
D. 20
Question 6
A person has a blood type of AB. If they have children with a person of blood type O, what is the probability that the child will have a blood type of AB?
A. 0.25
B. 0.5
C. 0.75
D. 1
Question 7
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 8
The process of excretion in the kidney involves the reabsorption of glu\cose, amino acids, and other essential nutrients. Which of the following best describes the mechanism of reabsorption of glu\cose in the renal tubules?
A. Primary active transport
B. Secondary active transport
C. Passive diffusion
D. Osmosis
Question 9
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 10
A species of bird has a unique mating ritual where the male performs a complex dance to attract a female. What type of reproduction is this an example of?
A. Asexual
B. Sexual
C. Parthenogenesis
D. Mutualism
Question 11
A diagram of a human eye is shown below. Identify the part labeled 'B'.
A. Cornea
B. Iris
C. Lens
D. Retina
Question 12
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 13
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 14
A species of bird has a beak length of 10 cm. If the beak length is normally distributed with a mean of 12 cm and a s\tandard deviation of 2 cm, what is the probability that a randomly selected bird will have a beak length greater than 14 cm?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 15
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

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