coursework help: the affect on a plant on the rate of photosynthesis

[IffiePatel]

pwwwwwwweeeeeeeeeez sum1 help me owt.....

i did it a month ago n all ma work gttn deleted... so can sum 1 plz kindly help me owt...? :D

[scribble]

Well, if I'm correct, there's three things that affect the rate of photosynthesis, right?


I never did that coursework, see. :p

Carbon Dioxcide
Light
Tempreture.

Correct? No? Okay I'll hide......


:outta:

EDIT : Click this (http://www.ummah.com/forum/showthread.php?t=98768), it was your last thread about the same coursework some time back. :up:

[umme ahmed]

pwwwwwwweeeeeeeeeez sum1 help me owt.....

i did it a month ago n all ma work gttn deleted... so can sum 1 plz kindly help me owt...? :D

heres something to start you off....

Factors affecting the rate of photosynthesis
It can be affected by many things, including:

1)Sunlight - its Intensity & wavelength.
2)Temperature
3)CO2 and O2 - availability
4)Any factor that influences the production of chlorophyll,enzymes, or energy carriers(ATP and NADPH).

The rate of photosynthesis will always corrospond to that factor which is in least supply. Its rate will only increae when its supply is increated.

Sunlight
Generally the more light there is, the more photosynthesis occurs. This is true up to a point, where the plant has reached maximum photosynthesis levels, and so any increase in light intensity will not affect the plant further.


Temperature
Generally higher temperatures are better than cold temperatures for photosynthesis. However if it is humid, and the air is saturated with water vapour, photosynthesis is limited. This is because the water vapour being expelled cannot leave and go into the air, as there isn't a concernation difference for it to diffuse across. So the water vapour sits in the leaf, stopping photosynthesis.


CO2
Basically the more CO2 in the air, the better the rate of photosynthesis. Of course CO2 is taken in during the daytime, and if its content was less that normal, photosynthesis couldn't happen normally. Fertilisers increase the number of soil fungi and bacteria, thus increasing the levels of CO2 from their respiration and decomposition processes. So fertilisers are good news for plants.

Water and CO2
Plants need water for photosynthesis. If they lack it, they wilt. When they have a deficiency of water, their stomata close, so CO2 cannot diffuse into the leaves. So CO2 is also the limiting factor, although it is as a result of lack of water.

[umme ahmed]

http://ghs.gresham.k12.or.us/science/ps/sci/ibbio/cellenergy/photosynnotes/photosyn/factors.htm

do you have to do an experiment as well?

oooo i love biology :D

[Ezra]

pwwwwwwweeeeeeeeeez sum1 help me owt.....

i did it a month ago n all ma work gttn deleted... so can sum 1 plz kindly help me owt...? :D

Ever heard of a thing called Google?

[muslima_89]

ha funny that i did the same course work...but seem to have placed it somewhere...