Podcast
Questions and Answers
Where do green plants primarily absorb water?
Where do green plants primarily absorb water?
- In the stem's vascular tissue
- Through the leaves
- In the root's pilferous zone (correct)
- From the surface of the soil
What structures are responsible for the absorption of water in plants?
What structures are responsible for the absorption of water in plants?
- Root cap cells
- Stem nodes
- Absorbent hairs (correct)
- Photosynthetic cells
The structural elements that facilitate water absorption in a plant are known as?
The structural elements that facilitate water absorption in a plant are known as?
- Absorbent hairs (correct)
- Capillary tubes
- Leaf pores
- Phloem vessels
Which part of the plant is NOT involved in water absorption?
Which part of the plant is NOT involved in water absorption?
Which statement about the absorbent hairs in plants is accurate?
Which statement about the absorbent hairs in plants is accurate?
What device is used to measure the volume of absorbed water?
What device is used to measure the volume of absorbed water?
If the radius of the capillary tube is 2.21 mm, what is its radius in meters?
If the radius of the capillary tube is 2.21 mm, what is its radius in meters?
Which formula correctly expresses the volume of absorbed water?
Which formula correctly expresses the volume of absorbed water?
In the volume formula $V = rac{h}{ ext{area}}$, what does 'h' represent?
In the volume formula $V = rac{h}{ ext{area}}$, what does 'h' represent?
What does the variable $h_1$ represent in the volume formula?
What does the variable $h_1$ represent in the volume formula?
Flashcards
What is a potometer?
What is a potometer?
A device used to measure the volume of water absorbed by a plant.
How is the volume of absorbed water calculated?
How is the volume of absorbed water calculated?
The volume of absorbed water is calculated by multiplying pi, the radius squared, and the change in height of the water column.
What is the significance of (h1-h0) in the volume calculation?
What is the significance of (h1-h0) in the volume calculation?
The change in height of the water column in the potometer, which represents the volume of water absorbed by the plant.
What is the radius of the capillary tube?
What is the radius of the capillary tube?
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What is h1?
What is h1?
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Root hairs
Root hairs
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Pilferous zone
Pilferous zone
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Absorption
Absorption
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What is the term for tiny hair-like structures on plant roots?
What is the term for tiny hair-like structures on plant roots?
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What is the term for the part of the root where absorbent hairs are located?
What is the term for the part of the root where absorbent hairs are located?
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Study Notes
Measuring Absorbed Water Volume
- A device called a potometer is used to measure the volume of water absorbed.
- A capillary tube is used, modeled as a cylinder.
- The radius (r) of the tube is 2 x 1 mm.
- The volume (V) of absorbed water is calculated using the equation: V = πr²h, where h is the height of absorbed water.
- V = πr²(h₁ - h₀) , where h₁ is the final height and h₀ is the initial height.
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Description
This quiz focuses on the concept of measuring water absorption using a potometer. Learn about the calculations involved, including the formula for volume and how to apply it to a capillary tube model. Test your understanding of the variables and equations associated with this experiment.
