the loss of water vapour from the stomata of the leaves through diffusion.
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2
Plant cells
________ lose water and become flaccid.
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3
Capillary action
the tendency of water to travel up the narrow xylem tubes due to the interactions between water molecules and the xylem walls.
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4
C
(________) Temperature- Heat increases the rate of evaporation and also increases the movement of water molecules.
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5
Translocation
the process of transporting sugars from the leaves to other parts of the plant.
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cuticle
Waterproof layer that minimises water loss in the stem.
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7
dicotyledonous stems
In ________, the vascular bundles are arranged in a ring around a central pith.
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8
large central vacuole
They have degenerate protoplasm, which means they lack organelles such as the nucleus, ribosomes and the ________.
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9
single layer of cells
It is a(n) ________ bearing root hairs.
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10
Cambium cells
________ can differentiate into new xylem and phloem tissues.
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11
root hair
Each ________ is usually an outgrowth of a single epidermal cell, so they are one- cell thick.
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loss of water vapour
This allows the ________ from the intercellular air spaces in the leaves as the air outside has a lower water vapour concentration than the air inside the leaf.
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13
storage tissue
It consists of ________.
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14
Transpiration pull
the suction force caused by transpiration that pulls water up the xylem.
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15
rate of transpiration
The ________ will remain high as long as water vapour is continually being removed by wind.
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16
Companion cells
Cells responsible for performing the metabolic functions of the sieve tube elements.
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17
piliferous layer
Outermost, single layer of cells bearing root hairs.
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18
Root pressure
Water moves into the xylem vessels by osmosis, creating a pressure that forces water to move upwards
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19
Wilting
The process which takes place when the rate of transpiration exceeds the rate of water intake by the roots
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20
Light intensity
apart from temperature, humidity and air movement, one other factor affecting the rate of transpiration.
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Flashcard (28)