C3 and C4 plants

Plants!

Moderators: Leonid, amiradm, BioTeam

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Thu May 15, 2008 6:34 am

tittu, that's one of the practice questions on the IBO website, if i remember correctly. A C4 plant can undergo photosynthesis at lower concentrations of CO2 than the C3 plant. Therefore, the CO2 will keep decreasing after the inferior limit of the C3 plant, until it reaches the C4 inferior limit. B
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

angelyn1985
Garter
Garter
Posts: 7
Joined: Mon Sep 24, 2007 11:36 am

Re: C3 and C4 plants

Post by angelyn1985 » Thu Jun 12, 2008 2:36 pm

Just a question, are maize and soybean both C4 plants??

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Thu Jun 12, 2008 5:13 pm

maize yes. As for soybean, i don't know
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

Cat
King Cobra
King Cobra
Posts: 635
Joined: Thu Feb 14, 2008 7:40 pm

Post by Cat » Thu Jun 12, 2008 6:24 pm

Soybean is C3.

User avatar
Cristgonz
Garter
Garter
Posts: 40
Joined: Thu Nov 15, 2007 8:59 pm

Post by Cristgonz » Mon Jun 23, 2008 3:49 pm

simplyfied is that C4 (weeds) are more effective on the production of drymatter than C3 (plants except cactaceae and another ones) and C3 makes the normal photosynthesis cicle (krebs)-C4 do it easier.
you'll never see a C3 Plant growing up on the pavement but you can see some annual or perennial grasses everywhere (i have seen them on some celigins here in my country haha)
~~Agronomist Engineer, Dekalb Seeds
Anasac, Chile

User avatar
Cristgonz
Garter
Garter
Posts: 40
Joined: Thu Nov 15, 2007 8:59 pm

Re: C3 and C4 plants

Post by Cristgonz » Mon Jun 23, 2008 3:50 pm

angelyn1985 wrote:Just a question, are maize and soybean both C4 plants??

corn = C4
soybean = C3
that's why corn need less water to make more dry matter.
~~Agronomist Engineer, Dekalb Seeds
Anasac, Chile

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Re:

Post by MrMistery » Mon Jun 23, 2008 6:00 pm

Cristgonz wrote:[...] C3 makes the normal photosynthesis cicle (krebs)-C4 do it easier.[...]

Calvin-Bensen!
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

User avatar
Cristgonz
Garter
Garter
Posts: 40
Joined: Thu Nov 15, 2007 8:59 pm

Re: Re:

Post by Cristgonz » Wed Jun 25, 2008 3:25 am

MrMistery wrote:
Cristgonz wrote:[...] C3 makes the normal photosynthesis cicle (krebs)-C4 do it easier.[...]

Calvin-Bensen!

haha thanks
sorry!! i'm just a little bit oxidized ! i did it in my first year of my career hehe.
:)!!
but i guess u got my idea xD
~~Agronomist Engineer, Dekalb Seeds
Anasac, Chile

User avatar
alextemplet
King Cobra
King Cobra
Posts: 5599
Joined: Fri Dec 23, 2005 4:50 pm
Location: South Louisiana (aka Cajun Country)
Contact:

Post by alextemplet » Mon Jun 30, 2008 6:11 pm

Aren't C3 plants mostly monocots and C4 plants mostly eudicots?
Generally speaking, the more people talk about "being saved," the further away they actually are from true salvation.

~Alex
#2 Total Post Count

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Mon Jun 30, 2008 7:55 pm

No.
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

danni1708
Garter
Garter
Posts: 5
Joined: Thu Oct 30, 2008 12:56 am

Re: C3 and C4 plants

Post by danni1708 » Thu Oct 30, 2008 1:05 am

can someone either confirm or tell me im completely wrong..
do c3 plants undergo photosynthesis during the day using sunlight etc..
whilst c4 plants undergo photosynthesis at night? using some other method..
am i on the right track here or thinking of something completely different??

User avatar
MichaelXY
King Cobra
King Cobra
Posts: 885
Joined: Fri Jun 15, 2007 7:03 pm
Location: San Diego, Ca

Re: C3 and C4 plants

Post by MichaelXY » Thu Oct 30, 2008 5:14 am

danni1708 wrote:can someone either confirm or tell me im completely wrong..
do c3 plants undergo photosynthesis during the day using sunlight etc..
whilst c4 plants undergo photosynthesis at night? using some other method..
am i on the right track here or thinking of something completely different??


Photosynthesis can not happen without light, hence the name. So no, C4 does not undergo photosynthesis at night. I suspect you are thinking of CAM plants which open their stomata at night to transpire, and close the stomata during the day.

Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests