Biology 2014 Jamb Examination
Biology 2014 Jamb Examination
Question 21
The soil with highest water-retaining capacity is
Clayey soil has very fine particles that are closely packed, allowing it to retain more water than sandy or loamy soils. This property makes it ideal for crops requiring constant moisture.
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Question 22
The causative agent of Poliomyelitis is
Poliomyelitis is caused by the poliovirus, which attacks the nervous system, potentially leading to paralysis. Being viral in nature, it cannot be treated with antibiotics.
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Question 23
One of the ways of controlling noise pollution in urban areas is
Placing industries away from residential zones reduces exposure to industrial noise, protecting human health. Urban planning and zoning are effective strategies for noise pollution control.
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Question 24
A constituent of the exhaust fumes from electricity generating sets which causes serious pollution is
Carbon (II) Oxide, or carbon monoxide, is a toxic gas released from combustion. It contributes to air pollution and poses health risks because it binds to hemoglobin, reducing oxygen transport.
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Question 25
The major limiting factor of productivity in the aquatic habitat is
Availability of food often limits productivity in aquatic habitats. Even with sufficient water and sunlight, the growth of consumers depends on the abundance of primary producers.
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Question 26
Which of the following group of organisms feeds directly on green plants?
Primary consumers are herbivores that feed directly on producers (green plants). This group forms the second trophic level and is crucial in transferring energy from producers to higher levels.
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Question 27
A characteristic feature of tropical rainforest is that it
Tropical rainforests are highly biodiverse ecosystems containing numerous plant species. The dense canopy and diverse vegetation support a variety of animals and maintain ecological balance.
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Question 28
The study of how and why population size change over time is
Population dynamics focuses on changes in population size and structure over time, considering births, deaths, immigration, and emigration. It helps understand ecosystem stability and species survival.
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Question 29
A severe and long dry season is a characteristic feature of
The Sahel Savanna experiences prolonged dry periods with minimal rainfall, affecting vegetation and water availability. This adaptation shapes plant and animal survival strategies in the region.
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Question 30
The Cerebellum of the Brain controls
The cerebellum coordinates voluntary muscular activity, balance, and posture. It ensures smooth and precise movement by integrating sensory inputs with motor commands.
