Biology 2008 Jamb Examination
Biology 2008 Jamb Examination
Question 31
Genetically modified food products have not become universally accepted because
There is public concern about the long-term health and ecological effects of genetically modified foods. Since their effects on humans and the environment are not fully known, many consumers are cautious about accepting them.
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Question 32
A major adaptive feature of endoparasites is the
Endoparasites live inside host organisms, where movement is not necessary. Many have lost locomotory organs over evolutionary time, conserving energy and adapting to a parasitic lifestyle.
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Question 33
The ability of a chameleon to change its colour is an adaptive feature for
Chameleons change color primarily for camouflage to avoid predators and for communication. This color change provides a defensive advantage by making them less visible in their environment.
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Question 34
Which of the following is the most advanced evolutionary development in plants?
The development of flowers represents the most advanced evolutionary feature in plants, allowing efficient sexual reproduction, pollination by animals or wind, and greater diversification of plant species.
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Question 35
Which of the following is a major cause of variation among organisms?
Sexual reproduction introduces genetic recombination through the fusion of gametes from two parents. This mixing of genes creates genetic variation, which is essential for evolution and adaptation.
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Question 36
Use the diagram above to answer this question. Which of the organisms is characterised by the possession of a chitinous exoskeleton?
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Question 37
Use the diagram above to answer this question. The type of reproduction illustrated in IV is
Organism IV shows the formation of a small outgrowth from the parent body that eventually detaches, which is characteristic of budding. Budding is an asexual reproduction method commonly observed in yeast and hydra.
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Question 38
Use the diagram above to answer this question. The vessel that carries blood from l to ll is the
The pulmonary artery carries deoxygenated blood from the right ventricle (l) to the lungs (ll) for oxygenation. This is part of the pulmonary circulation in mammals.
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Question 39
Use the diagram above to answer this question. Water reabsorption takes place in
The part labelled III is the digestive system and IV is the excretory system.
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Question 40
Use the diagram above to answer this question. From the graph above, it can be appropriately deduced that?
The graph shows that organism l maintains a relatively constant body temperature regardless of external temperature, indicating it is endothermic, while organism II shows body temperature varying with the environment, indicating it is ectothermic.
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