Diversity of plant cells

Guard cell

In leaf epidermis cell that around stomata

Within the leave epidermis + contain chloroplast

Palisade cell

Closely packaged photosynthesis cells within leaves 🍁

Within leaves are well adapted to photosynthesis

Root Hair Cell

Epidermal cell of young roots with long hair-like projections

Epidermal cells on the outer layer of young plant roots

Guard cell

When water enters the quart cells from the epidermal cells ( mitosis ).

→ Guard cell swell + tip of cellulose cell wall * = more flexible + rigid

Light energy = produce ATP for active transport → Potassium in from surrounding epidermal cell into guard cell

Gas exchange occurs → CO2 disuse into palisade cell + use for photosynthesis < when stomach opens air enter the space within the cell beneath the palisade cell

O2 produced during photosynthesis → diffuse out the plasmids layer through the opened stomata

Palisade cell

Long + Cylindrical → Packed together closely with little air. Space to circulate : CO2 in air space into the cell

Large vacuole → Chloroplast are positioned near periphery of cell : reduces the diffusion distance for CO2

Cytoskeleton + Motor Protein : Helps to move the chloroplast near to the upper surface of the leaf when light intensity are low

Root Hair Cell

Hair like projections → Grealty increase the SA for absorption of water + mineral ion from the soil

Mineral ion are actively transport into root hair cell : lowering the water potential

→ causing water to follow by osmosis , down the water potential gradient

Carrier protein in the plasma membrane : actively transport mineral ion in

Produce ATP for active transport

Xylem + Phloem

Form the vascular tissue of plant + xylem vessels + phloem sieve tube are present in the vascular bundles.