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Practice Listening: Select Missing Word ID: #36468 Short Atmospheric pressure
Instructions ›
You will hear a recording about a topic. At the end of the recording the last word or group of words has been replaced by a beep. Select the correct option to complete the recording.

Transcript:

Atmospheric pressure can support a column of water after ten meters high, but plants can move water much higher. The sequoia tree can pump water to its very tough, more than one hundred meters above the ground. Until the end of the nineteenth century, the movement of water in trees and other tall plants was a mystery. Some gardeners hypothesized that the living cells of plants acted as palms, but many experiments demonstrated that the stance of plants in which all the cells are killed can still move water to appreciable heights. Other explanations for the movement of water in plants have been based on root pressure, a push on the water from the roots at the bottom of the plant. The root pressure is not nearly great enough to push water to the tops of tall trees. Furthermore, the conifers, which are among the tallest trees, have unusually low.
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Result:

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Option 3: "root pressures"

Explanation: This option is correct as it directly relates to the text's discussion on how water moves in plants. The text explains that root pressure is a mechanism that contributes to water movement, although it is not sufficient to push water to the tops of tall trees, making it the most relevant term in this context.

Option 1: "pressures"

Explanation: The term 'pressures' is too vague and does not specify the type of pressure being discussed in the context of the text. The text specifically refers to 'root pressure' as a mechanism for water movement in plants, making this option incomplete.

Option 2: "atmospheric pressure"

Explanation: While atmospheric pressure is mentioned in the text, it is not the correct term to complete the sentence. The text discusses how atmospheric pressure can support water columns but does not relate it to the movement of water in plants, which is specifically attributed to 'root pressures'.

Option 4: "water pressure"

Explanation: The term 'water pressure' is not specifically mentioned in the text and is too general. The text focuses on 'root pressure' as the specific mechanism for water movement in plants, thus making this option incorrect.

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