Specialisation In Plant Cells Flashcards
Why do plants need root hair cells?
They are found close to the tips of growing roots. They help the plant to take in lots of water and minerals from the soil more efficiently
Why do root hair cells have increase the surface area?
So that water can move into the cell
Why do root hair cells have a large permanent vacuole?
It speeds up movement by osmosis
Why do root hair cells have many mitochondria ?
To help with active transport
Why do plants need photosynthesis cells?
To help the plant make food using photosynthesis
Why do photosynthetic cells contain green specialized structures called chloroplasts?
Chloroplasts contain chlorophyll which absorb the light needed for photosynthesis
Why are photosynthetic cells positioned in continuous layers?
To absorb as much light as possible
Why do photosynthetic cells have a large permanent vacuole?
To keep the cell rigid which is a result of osmosis
Why do plants need xylem cells?
They are tissues which transport minerals and water up the roots, up the plant system and into the leaves. It also helps support the cell
Why do xylem cells lose the end of their walls?
So the xylem forms a long hollow tube for minerals and water to pass through
Why do xylem cells have lignin spirals?
To make the cell very strong and help the cell withstand the pressure of the water coming up the plant
Why do plants need phloem cells?
To transport tissues that carry food made by photosynthesis around the plant. The food moves up and down the phloem tubes
Why do phloem cells lose their internal cells?
This is because they are instead supported by companion cells because the mitochondria in the companion cells transfer the energy needed to transfer more food
