Key Area 2.6 (a) The Need For Transport In Plants Flashcards
How are sugars transported in plants
In the phloem to all parts of the plant where they are needed for respiration
Give two reasons why plants need a transport system
Transport water to leaves for photosynthesis, transport food around plant
Give two examples of substances that need to be transported around a plant
Sugar, water or minerals
Give the structure of a xylem vessel
Narrow, hollow tube-shaped.
Walls of lignin.
State the part played by xylem vessels in plant transport
Conduct water up from roots towards stems and leaves.
Name the process by which water evaporates through the stomata of leaves
Transpiration
State the role of the guard cells in the epidermis of a leaf
Can change shape to open and close the stomata, so controlling gas exchange
State the roll of phloem tubes in the transport system of a plant
Transport sugars around the plant.
How does the movement of water into plants occur
By osmosis through the root hairs
Where are water and minerals transported
Into xylem cells
How is most water lost
By evaporation into air spaces in mesophyll and then out through pores called stomata in the leaf epidermis
How is a stoma formed
A pore between a pair of guard cells who’s action can open or close the pore
