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WAEC Biology – Liberia

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Question 211

Which excretory organ is primarily responsible for regulating water balance in humans?
Excretion and osmoregulationExcretion and osmoregulationmedium

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Question 212

Which hormone is most directly responsible for triggering ovulation in the menstrual cycle?
Coordination and responsivenessCoordination and responsivenesshard

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Question 213

Which process introduces genetic variation during meiosis?
Heredity and geneticsHeredity and geneticsmedium

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Question 214

Which process allows water to move across a selectively permeable membrane without energy expenditure?
Cell activities and transportCell activities and transporteasy

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Question 215

Which pigment primarily captures light energy for photosynthesis?
Photosynthesis and respirationPhotosynthesiseasy

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Question 216

In humans, which organ system is primarily responsible for removing nitrogenous wastes?
Excretion and osmoregulationExcretion and osmoregulationmedium

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Question 217

Which of the following is a characteristic of sexual reproduction?
ReproductionReproductioneasy

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Question 218

What is the basic unit of heredity that determines traits?
Heredity and geneticsHeredity and geneticsmedium

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Question 219

Which ecological term describes a community of living organisms and their physical environment interacting as a system?
EcologyEcologyhard

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Question 220

Which process best explains the gradual change in species traits over generations due to environmental pressures?
Variation and evolutionVariation and evolutionhard

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