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biology question!

Does anyone know how light intensity effects leaf surface area and stem lenght. Im doin A2 cw at the mo n hav found that the higher the light intensity the larger the leaf surface area and the plants have a shorter stem lenght. Is this correct?
Reply 1
Avatar for djk_99
djk_99
13
Lol I did that for my A2 coursework!! In general I found in the sunlight leaves had smaller surface area, as in the dark they got less light, so needed larger surface area to catch the same amount of light, to photosynthesis the same amount and so make the same amount of energy. But we were sort of prompted by my teachers and I picked my leaves to go along with my hypothesis. I got almost full marks on my coursework, so I think its right. Dead easy courswork to do though, you picked a good one! Hope that helps -x-
Reply 2
Avatar for kat_r
kat_r
OP
djk_99
Lol I did that for my A2 coursework!! In general I found in the sunlight leaves had smaller surface area, as in the dark they got less light, so needed larger surface area to catch the same amount of light, to photosynthesis the same amount and so make the same amount of energy. But we were sort of prompted by my teachers and I picked my leaves to go along with my hypothesis. I got almost full marks on my coursework, so I think its right. Dead easy courswork to do though, you picked a good one! Hope that helps -x-

Thank you! I dont suppose u still have ur coursework n would b able to email it to me so i can see where i have gone wrong n managed to get totally opposite results to you?!
Reply 3
Avatar for MadNatSci
MadNatSci
12
Remember that even if the results are weird you can still get really high (probably full) marks as long as you do the experiment properly, write it up properly and explain what you think caused the anomalous result :smile:

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