Were you able to observe the soil getting wet in the upper pot?
Yes, the soil in the upper pot gets wet through capillary action.
Capillary action is the process by which liquid moves through a narrow space, like the fibres of a wick, without the help of external forces like gravity.
The cotton thread or cloth wick absorbs water from the reservoir below and transfers it upward to the growth medium in the upper portion, keeping the soil consistently moist for plant growth.
Explanation
The chapter explains on Page 18 that capillary action is the process by which liquid moves through narrow spaces like the fibres of a wick without external forces. The wick draws water from the reservoir to the growth medium, ensuring the soil remains moist for plant growth.
Solution Steps
The soil in the upper pot gets wet through capillary action.
Capillary action is the process by which liquid moves through narrow spaces without external forces like gravity.
The cotton thread or cloth wick absorbs water from the reservoir and transfers it upward to the growth medium.