Movement Of Water Through Plants Flashcards

1
Q

What is plasmodemasta?

A

The gaps in the cell wall containing cytoplasm that connect the two cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How does water travel in the apoplast pathway?

A

Water passes through the spaces in the cell wall and between the cells.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does the apoplast pathway not do?

A

Travel through the cytoplasm. Therefore it does not require osmosis.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How does water travel through the symplast pathway?

A

Water enters the cytoplasm through the membrane it can then pass through the plasmodesmata to the next cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Because the apoplast pathway does not require osmosis what can it allow?

A

The movement of mineral ions. It also allows the movement of water on mass.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How does water travel through the vacuolar pathway?

A

Similar to the symplast however the water is not confined to the cytoplasm. It can also pass through the vacuoles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Define water potential.

A

A measure of the tendency of water molecules to pass from one place to another.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Where does water always move in terms of water potential?

A

From an area of low concentration to an area of high concentration.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the water potential of pure water?

A

Zero

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What will minerals and ions in the cells cytoplasm do to the water potential of a cell?

A

Lower it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why does the addition of minerals and ions lower the water potential of a cell?

A

Because there are fewer free water molecules available.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Why will a plant cell not continue to uptake water until it bursts?

A

Because of the strong cellulose cell wall.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Once a cell is full of water it is described as being what?

A

Turgid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

As pressure potential inside a plant cell builds up what does this do?

A

Reduces the influx of water.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

If a plant cell is placed into a salt solution what will happen? Why is this?

A

Water will leave the cell by osmosis.

Because the water potential of the cell is higher than the water potential of the salt solution.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

As water is lost what will happen to the cell?

A

The cytoplasm and vacuole will shrink.

The plasma membrane will lose contact with the cell wall and plasmolysis will occur.

17
Q

What is plasmolysis?

A

When he plasma membrane of a plant cell loses contact with the cellulose cell wall.

18
Q

When plant cells are touching each other how is water transported?

A

From a cell with a high water potential to a cell with a lower water potential.