OCR gateway- B4

Structure of cells in a leaf:

Epidermis- thin an transparent allowing light through to inner cells

 Palisade Cell- contains large amounts of chloroplasts to absorb light

Chloroplasts- found mainly down sides of palisade cells allowing light to reach mesophyll cells

Air spaces- Between mesophyll cells allow gases to diffuse easily and reach cells  

Leaf adaptations:

BROAD- large surface area to absorb light

THIN- gases dont have to travel far and light can reach all way through

CHLOROPHYLL- in most of cells, makes leaf green

NETWORK OF VEINS- support and carry water and sugars to different parts of the plant

STOMATA- to allow gas exchange (Carbon dioxide diffuses into it and oxygen diffuses out)

GASES MOVE BY DIFFUSION

Osmosis:

OSMOSIS-…