Specilisation In Plant Cells Flashcards
How are root hair cells adapted?
Long hairs to increase surface area to absorb more minerals and water
No chloroplasts as they are underground
What are xylem cells?
Transport water and minerals from the root to the leaves
What are phloem cells?
Transport dissolved sugars
How are xylem cells adapted?
Long hollow tubes to transport more minerals and water
Thick walls made from lignin to provide support
No internal structures for easy flow of minerals and water
Describe how water is transported through plants.
Water is taken by osmosis from a high to low concentration.
Water travels through xylem cell from roots to leaves
Transpiration stream so movement replaces water as it evaporates from leaves
Describe how ions are transported in plants
Ions taken up by diffusion or active transport from a to high concentration
Travels in the xylem from roots to leaves
Describe how sugars are transported in the plant.
Made during photosynthesis
Travels in the phloem
To other parts of the plant
To store sugar
Why do root hair cells contain lots of mitochondria?
To produce lots of energy for active transport of mineral ions from the soil
