JAMB Biology 2023 past questions and answers

1 questions. Try each one, then open the answer to check yourself and read the explanation.

Question 9

Soil

Samples of different soil types are packed in glass tubes whose lower ends are plugged with cotton wool. If these tubes are suspended in a trough of water, water will rise highest after a few hours in

A.sand
B.loam
C.clay
D.humus.

Show the answer and explanation

Answer: C (clay)

Explanation

Clay has the finest particles and the narrowest spaces between them, so water rises highest in it by capillarity.

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