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AP Bio-Water Potential & Plants

Authored by Rene Massengale

Biology

10th - 12th Grade

NGSS covered

Used 67+ times

AP Bio-Water Potential & Plants
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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Where is CO2 mainly needed and taken up in a plant?

Roots

Stem

Flower

Leaf

Root hairs

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements is true?

Water is transported actively against a concentration gradient.

Water flows into the direction of the lowest water potential.

Active transport is ATP-independent.

Osmosis requires impermeable membranes.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Bulk transport in the phloem-

Runs strictly from the sink to the source.

Requires no water.

Depends on positive pressure that builds up at the source sites.

Is completely energy independent.

Does not occur in the roots since this is a light dependent process.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements is correct for stomata opening?

Stomata take up K+ into their guard cells, which attracts water to enforce their opening.

Stomata export K+ from their guard cells, which causes water to diffuse out, and that is the trigger for stomata to open up.

Na+ is the main ion source to control stomata opening in plants.

Most critical is the closing of aquaporins in the cell wall of guard cells to open up stomata.

Stomata have small muscles that contract and open up the kidney shaped guard cells.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements is not correct?

Phloem is living tissue that can exchange water with xylem.

Phloem transport organic material only to the roots (top to bottom).

Phloem can transport organic material anywhere that it is needed.

Phloem can be found in all leaves, the stem, and the root.

Phloem often uses sugar to supply sinks in the plant with energy rich carbon-hydrogen material.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What are the two key tissues that allow plants to transport water or organic nutrients, respectively, over long distances?

xylem and bundle sheath cells

periderm and phloem

sclerenchyma and xylem

xylem and phloem

collenchyma and xylem

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

To transport water from the root into the shoot does the water potential in the xylem need to become more positive or negative?

Positive

Negative

Neither positive nor negative

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