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NECTA Biology AI Practice

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Note: Diagram-based questions are coming soon. WAEC Biology Paper includes ~5 diagram questions.

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Question 171

Which structure in the human respiratory system is the site of gas exchange?
Human physiologyRespiratory system anatomy and functioneasy

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Question 172

Which of the following best describes a food chain in an ecosystem?
EcologyFeeding relationships and food chainsmedium

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Question 173

During which phase of the menstrual cycle does ovulation occur?
ReproductionMenstrual cycle phasesmedium

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Question 174

Which genetic disorder is caused by the presence of an extra chromosome 21?
GeneticsChromosomal abnormalitieshard

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Question 175

What is the primary function of phloem in plants?
Nutrition and transportTransport in plantseasy

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Question 176

In Mendel’s experiments, what ratio did he observe in the F2 generation for dominant to recessive traits?
GeneticsMendelian inheritancemedium

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Question 177

Which hormone controls the regulation of blood glucose levels by lowering it?
Human physiologyEndocrine systemmedium

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Question 178

What is the role of the placenta during human pregnancy?
Human physiologyReproductive systemhard

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Question 179

Which of the following best describes an ecological pyramid of biomass?
EcologyEnergy flow in ecosystemshard

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Question 180

Which organelle is responsible for producing energy in the form of ATP in animal cells?
Cell biologyCell structure and functioneasy

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