Angel4life
Badges: 11
Rep:
?
#1
Report Thread starter 2 months ago
#1
For photosynthesis there is something called compensation point
What is it and where is it exactly on the graph ?

PLS HELP SOS
0
reply
HarisMalik98
Badges: 12
Rep:
?
#2
Report 2 months ago
#2
As you know, altering light intensity will affect the rate of photosynthesis. The compensation point is the light intensity where the rate of photosynthesis is equal to the rate of cellular respiration. While the rate of respiration is relatively constant, the rate of photosynthesis will vary throughout the day due to increasing/decreasing sunlight intensity. It will start off low during sunrise, followed by an increase to a peak at the most intense light period, followed by a decrease to low levels again during sunset (a "bell-curve" shape). If you imagine these rates plotted on the same graph against time, the (relatively) linear respiration rate would intersect the bell-curve photosynthesis rate twice; which is usually at dusk and dawn. These are the compensation points.

What you'll most likely be shown is a graph of net CO2 uptake (on the y-axis) against light intensity (on the x-axis). Since the rate of both processes is equal, and both reactions consume/produce equal amounts of CO2, the compensation point would be where the graph intersects the X-axis (i.e when the net gain of CO2 is 0).
Last edited by HarisMalik98; 2 months ago
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

What factors affect your mental health the most right now?

Anxiousness about lockdown easing (119)
4.95%
Uncertainty around my education (357)
14.86%
Uncertainty around my future career prospects (263)
10.95%
Lack of purpose or motivation (338)
14.07%
Lack of support system (eg. teachers, counsellors, delays in care) (109)
4.54%
Impact of lockdown on physical health (141)
5.87%
Loneliness (208)
8.66%
Financial worries (89)
3.71%
Concern about myself or my loves ones getting/having been ill (101)
4.2%
Exposure to negative news/social media (116)
4.83%
Lack of real life entertainment (128)
5.33%
Lack of confidence in making big life decisions (208)
8.66%
Worry about missed opportunities during the pandemic (225)
9.37%

Watched Threads

View All