Transport in plants

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  • Created by: Steff06
  • Created on: 23-05-16 12:39
What does the xylem transport and in what direction?
The xylem transports water and soluble minerals upwards.
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What does the phloem transport and in which direction?
The phloem transports sugars and other assimilates up or down the plant.
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Why do plants need a transport system?
All of the cells in a large multicellular plant would not receive enough water or nutrients to survive without a transport system.
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What is the tissue called that the transport system moves water in?
Vascular tissue.
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How are the xylem and phloem found?
Together in vascular bundles.
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What do these bundles also contain and why?
Often contain other types of tissues that give the bundles strength and support the plant.
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Where is the vascular bundle found in a plant?
Found at the centre of a young root.
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Describe the arrangement of xylem and phloem within the vascular tissue
There is a large central core of xylem in the shape of an X. Phloem found inbetween the arms of the x-shaped xylem.
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What does this arrangement provide?
Provides strength to withstand the pulling forces to which the roots are exposed.
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What is around the vascular bundle?
A special sheath of cells called the endodermis.
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What is the role of the endodermis?
Has a key role in getting water into the xylem vessels.
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What is just inside the endodermis?
A layer of meristem cells called the pericycle that are able to divide.
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Describe the difference between vascular bundles in non-woody plants and woody plants.
In non-woody plants, the bundles are separate and discrete. In woody plants, bundles are separate in young stems, but become continuous in older stems.
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Where can a complete ring of vascular tissue be found in a tree?
Just under the bark of a tree.
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What is in between the xylem and phloem?
A layer of cambium.
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What is the cambium?
A layer of meristem cells that divide to produce new xylem and phloem.
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What do the vascular bundles form?
Form the midrib and veins of a leaf.
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What are the 2 major groups of flowering plants?
Dicotyledons and monocotyledons.
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What is different about dicotyledons and monocotyledons?
They have different patterns of veins.
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What does a dicotyledon leaf have?
A branching network of veins that get smaller as they spread away from the midrib.
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What can be seen within each vein?
The xylem can be seen on top of the phloem.
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Other cards in this set

Card 2

Front

What does the phloem transport and in which direction?

Back

The phloem transports sugars and other assimilates up or down the plant.

Card 3

Front

Why do plants need a transport system?

Back

Preview of the front of card 3

Card 4

Front

What is the tissue called that the transport system moves water in?

Back

Preview of the front of card 4

Card 5

Front

How are the xylem and phloem found?

Back

Preview of the front of card 5
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