Biology 2014 Jamb Examination
Biology 2014 Jamb Examination
Question 11
One of the advantages of outbreeding is
Outbreeding increases genetic diversity, which enhances the ability of offspring to resist diseases. By combining genes from unrelated individuals, harmful recessive traits are minimized, improving overall health.
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Question 12
An individual with blood group AB can receive blood from those in blood group(s)
Individuals with blood group AB are universal recipients because they have no antibodies against A or B antigens. They can safely receive blood from any group without risk of agglutination.
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Question 13
The stream-lined shape of fishes is an adaptation for
A streamlined body reduces water resistance, allowing fishes to move efficiently and swiftly through water. This adaptation improves swimming speed, reduces energy expenditure, and enhances survival.
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Question 14
An example of a poikilothermic organism is a
Poikilotherms, such as lizards, have body temperatures that fluctuate with the surrounding environment. Unlike homeotherms, they rely on external heat sources to regulate their metabolic activity.
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Question 15
Which of the following is true of small pox?
Smallpox is a viral disease that can be prevented through vaccination. Vaccination induces immunity, which protects individuals and helps in eradicating the disease without relying on antibiotics.
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Question 16
A pollutant that is mostly associated with acid rain is
Nitrogen (IV) oxide reacts with water in the atmosphere to form nitric acid, a major component of acid rain. Acid rain can damage plants, aquatic life, and man-made structures.
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Question 17
When the adults have reached a certain degree of weakness, the process of binary fission is replaced by conjugation in
In Paramecium, conjugation occurs when individuals are stressed or weakened, allowing exchange of genetic material to increase variation. Binary fission resumes once favorable conditions return.
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Question 18
Whorls, arches, loops and compounds are types of variation in
Fingerprints exhibit patterns such as whorls, loops, arches, and compound forms. These variations are unique to individuals and are used for personal identification.
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Question 19
A couple has 10 children, all female. Which of the following best explains the situation
Sex is determined by the type of sperm (X or Y) fertilizing the ovum. If only X-bearing sperm fertilize eggs, all offspring will be female, indicating that the man's X chromosome determined the sex.
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Question 20
Which of the following is a nitrogen-fixing blue-green algae of soil?
Anabaena is a nitrogen-fixing cyanobacterium that converts atmospheric nitrogen into forms usable by plants. It plays a vital role in soil fertility and the nitrogen cycle.
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Gross earnings........................N950 000
Current liabilities...................N100 000
Operating expenses....................N350 000
10% debentures........................N400 000
Shareholder's fund....................N1300 000
Corporate tax is 30%
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| Total current assets | N2,000 |
| Total fixed assets | N4,000 |
| Current liabilities | N1,200 |
| Drawings | N200 |
| Long-term loan | N2,000 |
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If the distance between two point charges is increased by a factor of four, the magnitude of the electrostatic force between them will be
The exotic bird looked resplendent; its bright plumage contrasted with the rather _________ undergrowth