Login

Join for Free!
114117 members


C-3 , C-4 plants... experiment

Plants!

Moderator: BioTeam

C-3 , C-4 plants... experiment

Postby Cecilie » Sat Apr 30, 2005 6:56 pm

Hello everybody,

I was hoping somebody could give me an idea for a simple experiment that can distinguish between C-3 and C-4 plants.
Cecilie
Garter
Garter
 
Posts: 6
Joined: Sat Apr 30, 2005 6:50 pm

Postby MrMistery » Sun May 01, 2005 12:54 am

Put some wheat and some corn in a room with very intense light and a temperature of up to 40 degrees celcius. Then observe the grouth rate of each plant every day
"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
MrMistery
Inland Taipan
Inland Taipan
 
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)

Postby Cecilie » Sun May 01, 2005 6:35 am

The C-4 plants will outgrow the C-3 plants. Brilliant. thanks a lot
I was gratified to be able to answer promptly. I said, "I don't know." (Mark Twain)
Cecilie
Garter
Garter
 
Posts: 6
Joined: Sat Apr 30, 2005 6:50 pm


Postby Tamsicle » Sun May 01, 2005 6:39 am

Temperature would be a really great thing to use in this instance, since obviously C4 plants are much more efficient when environmental conditions are sunny and warm....so your C4 plant is going to, in theory, be more efficient in fixing CO2....BUT since your plants are going to need to be different species (?), you're going to have to grow two of the same species in another environment to actually monitor the growth from the same phase...because it'd be like feeding a baby rat and a baby human the same type of food and trying to determine which one gains weight/develops more quickly...you need the comparison. I like this question. It made me think. Was it a txt book question or something for Uni, or...? I've been working my ass off on biology questions all day. My brain actually hurts from thinking....I was reading this really cool article on the way some deep sea divers breathe deeply for a while and can stay under water without needing to breathe (or so they think because the receptors actually responsible for-well kinda- initiating breathing go by the amount of CO2...and because they'd expelled a whole lot but the oxygen level was being depleted normally...) and they can fall unconscious and...it was really cool. And I had also never heard of "Brown Fat" before yesterday either. Fascinating stuff. I'm rambling. :roll:
Tamsicle
Garter
Garter
 
Posts: 26
Joined: Wed Apr 27, 2005 5:26 am

Postby Cecilie » Sun May 01, 2005 7:21 am

I was a question on last year's exam. And I agree, it is a good question - simple questions often require more thought. Good point about the reference group.
I was gratified to be able to answer promptly. I said, "I don't know." (Mark Twain)
Cecilie
Garter
Garter
 
Posts: 6
Joined: Sat Apr 30, 2005 6:50 pm

Postby MrMistery » Tue May 03, 2005 6:17 pm

Great idea... You should do that with the plants
you could do it with only on e set of plants but it would take longer for you reach concludent results
"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
MrMistery
Inland Taipan
Inland Taipan
 
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)


Return to Botany Discussion

Who is online

Users browsing this forum: No registered users and 2 guests

cron