Step 1: Photorespiration kyaa thay?
Photorespiration mukhyatve C3 plants maa (wheat, sunflower) thay. Statement (a) 'C3 maa nathi' = galat.
Step 2: Gas exchange.
Photorespiration: O2 consume thay, CO2 release thay. (b) 'CO2 consume, O2 release' = GALAT. (c) 'Phosphoglycolate bane' = SACHU. (d) 'ATP/NADPH synthesis nathi' = SACHU (energy waste).
Step 3: ઉttaar.
\\[ \boxed{oxed{(c) ext{ ane } (d) ext{ -- saacha}} \} \]