Plant Transport and Coordination Flashcards

1
Q

What does the Xylem transport?

A

Water and minerals

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2
Q

What is the Xylems structure?

A
  • Made up of thick walled vessels
  • They are dead cells and contain no cytoplasm
  • They are completly hollow
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3
Q

What structure is the Phloem?

A
  • This consists of living cells
  • Cell walls made of cellulose
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4
Q

What does the Phelom transport?

A
  • It transports sucrose and amino acids from leaves
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5
Q

What does the Phloem need to move sucrose and amino acids and what is it called?

A
  • Energy
  • This is called translocation
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6
Q

In a plant stem, where is the Xylem and the Phloem located?

A
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7
Q

State how the Xylem transports water?

A
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8
Q

Define Transpiration

A

Transpiration is the evaportation of water from the surface of a plant

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9
Q

State the process of Transpiration

A
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10
Q

What is the funciton of the trasnpiration stream?

A
  • To carry mineral ions to the leaves
  • To keep turgor pressure high in the leaf cell
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11
Q

What affects the rate of transpiration?

A
  • Temperature
  • Humidity
  • Wind Speed
  • Light intensity
  • Water supply
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12
Q

How do we measure transpiration?

A

A potometer

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13
Q

Label a diagram for measuring transpiration

A
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14
Q

How do we set up a potometer?

A
  1. The potometer must be underwater
  2. Cut the stem of a shoot
  3. Put the shoot stem into the bung
  4. Grease the joint with plenty of petroleum jelly
  5. Put the bung into the potometer
  6. Make sure the tap is closed then lift the ensemble out of the water
  7. Leave the end of the capillary tube out of the water until an air bubble forms then put the end into a beaker of water
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15
Q

Define tropism

A

The growth of a plant towards a directional stimulus

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16
Q

What is growth towards light called?

A

Positive Phototropism

17
Q

What hormone controls the plants growth?

A

Auxin