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N5 Biology > 2.5: Transport Systems (Plants) > Flashcards

2.5: Transport Systems (Plants) Flashcards

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1
Q

What are the organs of a plant?

A
  • Roots
  • Stem
  • Leaves
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2
Q

What tissues transport substances in plants?

A
  • Xylem
  • Phloem
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3
Q

What substances does xylem transport?

A

Water & Minerals

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4
Q

What substance does phloem transport?

A

Sugar

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5
Q

What structure is in a xylem tissue?

A

Lignin

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6
Q

What structures are in a phloem tissue?

A

Sieve Plate & Companion Cells

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7
Q

Is xylem dead or alive?

A

Dead

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8
Q

Is phloem dead or alive?

A

Alive

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9
Q

What is the direction of transport in xylem tissue?

A

Upwards only

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10
Q

What is the direction of transport for phloem tissue?

A

Up & Down

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11
Q

Why are xylem cells lignified?

A

To withstand the pressure changes from water

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12
Q

What are the four layers of tissue in a leaf?

A
  • Upper epidermis
  • Palisade mesophyll
  • Spongey mesophyll
  • Lower epidermis
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13
Q

Where is xylem and phloem tissue found in a leaf?

A

Running through the veins

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14
Q

What structure is found on the underside of the leaf?

A

Stomata

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15
Q

What is the function of the stomata?

A

To open and close to control water loss from the plant

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16
Q

What controls the stomata opening?

A

Guard Cells

17
Q

What is the process where water moves from the roots to the leaves called?

A

Transpiration

18
Q

What is the process of transpiration?

4

A
  1. Water enters the roots from the soil by osmosis
  2. Water moves up the stem in the xylem
  3. Water travels to the leaf in the leaf vein
  4. Water evaporates and exits the leaf through the stomata
19
Q

Which factors affect the rate of transpiration?

4

A
  • Higher Wind speed
  • Higher temperate
  • Increased surface area
  • Higher humidity
20
Q

How does higher wind speed affect transpiration?

A

Results in faster transpiration

21
Q

How does higher temperate affect transpiration?

A

Results in faster transpiration

22
Q

How does increased surface area affect transpiration?

A

Results in more transpiration

23
Q

How does higher humidity affect transpiration?

A

Results in slower transpiration

N5 Biology (20 decks)

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