What is important about C4 plants?

[rnbaxter]

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C4 plants have advantage of conserving water and preventing photorespiration.

2 cell layer thick: Mesophyll cells to fix CO2 into a 4 Carbon compound and Bundle Sheath cells where the 4 carbon compound is transferred to release a steady supply of CO2.

Hot and dry environment where CO2 is low and O2 is high?

What else is important?

 

[g0forkurself]

due to compartmentalization, C4 plants avoid oxygen competition since oxygen has a higher affinity to one of the enzymes that binds to CO2. Sorry, took ecology a while ago and don't exactly remember the details.

 

[321931]

C4 plants have advantage of conserving water and preventing photorespiration.

2 cell layer thick: Mesophyll cells to fix CO2 into a 4 Carbon compound and Bundle Sheath cells where the 4 carbon compound is transferred to release a steady supply of CO2.

Hot and dry environment where CO2 is low and O2 is high?

What else is important?

Absolutely nothing. 👎 I hate the DAT for this reason -_-

 

[rnbaxter]

due to compartmentalization, C4 plants avoid oxygen competition since oxygen has a higher affinity to one of the enzymes that binds to CO2. Sorry, took ecology a while ago and don't exactly remember the details.

So this must be in that first layer of cells where they take in the CO2 then transport it to the second layer, therefore avoiding the O2 from entering the second layer and acting in photorespiration? I never took ecology.. so i'm struggling.

 

[g0forkurself]

If I remember correctly, it is because the first compartment has CO2 and O2 mixed, but the enzyme in the calvin cycle is in compartment two so CO2 in compartment 1 is made into some 3 or 4 Carbon compound then transported across into the calvin cycle, thus avoid O2 competition. Sorry, I know this is very vague but it's all I remember. Wikipedia might help?