OCR gateway- B4

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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-

Comments

bek

is this the whole b4 topic

Asiyah

great :)

ummamah

This is great! however you should change the title to "leaves, photosynthesis and diffusion" because it's based around that and NOT THE WHOLE OF B4. still good job

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