Water Transport and Osmosis

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What are transported through the veins of a plant?
Water and substances dissolved in the water are transported around plants in veins. Veins contain tissues called xylem and phloem.
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Describe how the xylem and phloem take part in the photosynthesis of the plant? (1)
Glucose, produced by photosynthesis in leaves, is converted to sucrose, which is transported in phloem to the rest of the plant.
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Describe how the xylem and phloem take part in the photosynthesis of the plant? (2)
Water and dissolved minerals from the roots travel in xylem to the rest of the plant.
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Describe how the xylem and phloem take part in the photosynthesis of the plant? (3)
Water and dissolved minerals enter plants through their roots from the soil water.
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What is Transpiration?
Transpiration is the evaporation of water from inside leaves out into the air. It causes water to move up the plant from the roots.
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What are the steps of Transpiration?
Evaporation of water vapour from leaves; draws water out of the leaf cells and xylem; draws water up the xylem from the roots; causes water to enter the roots by osmosis.
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Name the three types of transport?
Diffusion, Active transport, and Osmosis
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what is active transport?
Substances move up (or against) their concentration gradient. Needs energy so substances can move.
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What is Osmosis?
Osmosis is the net movement of water molecules from a region of their higher concentration to a region of their lower concentration through a partially permeable membrane.
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What is a partially permeable membrane?
A partially permeable membrane is a membrane that lets some molecules through but not others. Cell membranes are partially permeable membranes because small molecules pass through but not bigger molecules.
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Other cards in this set

Card 2

Front

Describe how the xylem and phloem take part in the photosynthesis of the plant? (1)

Back

Glucose, produced by photosynthesis in leaves, is converted to sucrose, which is transported in phloem to the rest of the plant.

Card 3

Front

Describe how the xylem and phloem take part in the photosynthesis of the plant? (2)

Back

Preview of the front of card 3

Card 4

Front

Describe how the xylem and phloem take part in the photosynthesis of the plant? (3)

Back

Preview of the front of card 4

Card 5

Front

What is Transpiration?

Back

Preview of the front of card 5
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