Flashcards in Transport/Food Flowering Plants Deck (16)
Give an example of an monocotyledonous plant.
How are veins arranged in the leaves of monocots?
How are the veins arranged in the leaves of dicot plants?
Networked/ branched network
Water enters outermost cells of the root by osmosis. What does this tell you about the cell sap of the outermost cells?
Lower water concentration
Higher solute concentration
Where precisely is the xylem found in the stem of a young dicotyledonous plant?
In the vascular bundles next to phloem
Where is vascular tissue found in the root?
Centre of root
Give one function of ground tissue?
What is the function of meristematic tissue?
Growth. This is where mitosis takes place
Explain how water enters root hairs and then passes to the vascular tissue.
Osmosis / soil water more dilute / cell to cell (by osmosis)
Give two features of xylem that facilitates upward movement of water.
Narrow walls / no cell contents
Name and briefly explain any two processes involved in upward movement of water in plants.
Root pressure: H2O in pushes H2O up
Transpiration: H2O out pulls H2O up ( creates tension)
Explain how water enters the plant.
By osmosis/ when water moves from area of high water concentration through a semi - permeable membrane.
Do minerals enter the plant by the process of osmosis?
No/ only water moves by osmosis
How is xylem adapted for its role in water transport?
Lignified walls/ tubular lumen
Give account of cohesion model.
Water evaporates in leaf / water column hard to break continuous stream