20
QuizMultiple Choice

The Earth's Surface — Test

Question 20 • Earth and Space Science

Why is capillary action important for transporting water in ecosystems, especially in dry environments?

Answer
A
It helps minerals travel upward by evaporating with the water.
B
It causes water movement to slow down after rainfall occurs.
C
It allows water to move upward from deeper soil layers to plant roots.
D
It reduces surface evaporation by holding water close to the soil.

Explanation

Capillary action pulls water through the tiny spaces between soil particles, allowing it to move upward from deeper, wetter layers toward plant roots. This is especially helpful in dry environments, where rainfall is scarce and plants may need water stored below the surface. The correct choice is “It allows water to move upward from deeper soil layers to plant roots.”

AI-written and checked against the verified answer.

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