POST UTME COAL CITY UNIVERSITY 2020 Biology | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A plant's xylem is responsible for transporting what type of subs\tances?
A. water and minerals
B. sugars and amino acids
C. hormones and waste products
D. oxygen and carbon dioxide
Question 2
A researcher is studying the effect of a new pesticide on a population of insects. The pesticide kills 20% of the insects in the first week, 30% in the second week, and 40% in the third week. What is the total percentage of insects killed after three weeks?
A. 60
B. 70
C. 80
D. 90
Question 3
A researcher is studying the effect of a new pesticide on a population of insects. The pesticide kills 20% of the insects in the first week, 30% in the second week, and 40% in the third week. What is the total percentage of insects killed after three weeks?
A. 60
B. 70
C. 80
D. 90
Question 4
A 10-year-old child is diagnosed with a rare genetic disorder that affects the production of a specific enzyme. The child's parents are both carriers of the mutated gene. What is the probability that their next child will be affected by the disorder?
A. 0.25
B. 0.5
C. 0.75
D. 0.9
Question 5
In a population of 1000 individuals, 20% are heterozygous for the gene controlling the flower color. If 50% of the heterozygous individuals produce red flowers, what is the probability that a randomly selected individual will produce red flowers?
A. 0.1
B. 0.2
C. 0.3
D. 0.4
Question 6
A researcher is studying the effect of a new pesticide on a population of insects. The pesticide kills 20% of the insects in the first week, 30% in the second week, and 40% in the third week. What is the total percentage of insects killed after three weeks?
A. 60
B. 70
C. 80
D. 90
Question 7
A species of bird is found in a specific type of habitat. Which of the following statements is correct?
A. The species is found in a specific type of habitat.
B. The species is found in a variety of habitats.
C. The species is found only in a specific type of habitat.
D. The species is found in no specific type of habitat.
Question 8
The xylem is a type of vascular tissue in plants that is responsible for transporting water and minerals from the roots to the leaves. Which of the following is a characteristic of xylem tissue?
A. Xylem tissue is composed of dead cells.
B. Xylem tissue is composed of living cells.
C. Xylem tissue is responsible for transporting sugars from the leaves to the roots.
D. Xylem tissue is responsible for transporting water and minerals from the roots to the leaves.
Question 9
A diagram of a plant's root system would show what type of roots?
A. taproot
B. adventitious root
C. fibrous root
D. modified root
Question 10
A diagram of a plant cell is shown below. What is the function of the mitochondria?
A. To synthesize proteins
B. To store genetic information
C. To generate energy for the cell
D. To regulate cell growth
Question 11
In a eukaryotic cell, the process of photosynthesis occurs in the mitochondria. Which of the following statements is correct?
A. The mitochondria is the site of photosynthesis in eukaryotic cells.
B. The mitochondria is the site of cellular respiration in eukaryotic cells.
C. The mitochondria is the site of protein synthesis in eukaryotic cells.
D. The mitochondria is the site of DNA replication in eukaryotic cells.
Question 12
The hormone responsible for regulating the reproductive cycle of females is:
A. Estrogen
B. Progesterone
C. Testosterone
D. Insulin
Question 13
The process by which an organism's genetic information is modified is called:
A. Mutation
B. Genetic drift
C. Natural selection
D. Gene expression
Question 14
A diagram of a human blood vessel is shown below. What is the function of the part labeled 'B'?
A. To transport oxygen to the body
B. To transport carbon dioxide from the body
C. To regulate body temperature
D. To synthesize proteins
Question 15
The process by which plants release water vapor into the air is known as
A. Transpiration
B. Respiration
C. Photosynthesis
D. Evaporation

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