c3 and c4 doubt..

[sonawanes61]

1)wht will happen if a c4 plant is kept in an atmosphere containing very low co2 conc. (.0002ppm) ?

2)wht will happen to c4 plant if it is kept in an atmosphere containing 50ppm co2 conc.?
will it follow c3 pathway or continue c4?
also wht will be d effect on d pathway?

3)wht will happen to c3 plant if it is kept in an atmosphere having co2 conc. very low (2ppm) ?

[Cat]

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