The more complex adaptations are of the internal leaf structure. The epidermis is thin and its transparent this means that more light can reach the palisade cells underneath the upper epidermis. The palisade cells themselves are er to the top of the leaf so they can absorb more if the light; they contain chloroplasts so that they can absorb the light. The spongy layer has air spaces in: these allow for carbon dioxide to diffuse through the leaf, and they increase the surface area. The wax cuticle is thin and made out of wax so it doesn't stop the sunlight from getting through.
do you need to know the complex adaptations for IGCSE?
ReplyDeletewhat did you get in your gcses hannah? also when did you start revising?
ReplyDeleteIf your GCSEs are this summer (like me) then revise now!
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Deletehow many marks u got in bio
ReplyDeleteHannah
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Deletethanks
ReplyDeleteThis comment has been removed by the author.
ReplyDeletepeople like u r life savers
ReplyDeleteThe Biology Syllabus has changed.... New Syllabus Blog:
ReplyDeletehttp://igcse-biology-2017.blogspot.hk
look at for more
ReplyDeletehttp://igcse-biology-notes.blogspot.hk/2017/06/220-describe-structure-of-leaf-and.html
That spec is for a different exam board.
Deleteit's for the same exam board, they are both edexcel, but just different specification because of adaptations.
Deletesaa dud
ReplyDeletedo we need to know the complex adaptations for GCSE (2019)?
ReplyDelete