RuBP carboxylase fixation of CO₂ in C₃ plants. Hydrogenase catalyses addition of hydrogen.

Correct Option: B

RuBP carboxylase fixation of CO₂ in C₃ plants. Hydrogenase catalyses addition of hydrogen.

RUBISCO is the enzyme involved in Calvin cycle. Nitrogenase catalyses nitrogenation. Invertase catalyses breaking of sucrose to glucose and fructose.

Correct Option: B

RUBISCO is the enzyme involved in Calvin cycle. Nitrogenase catalyses nitrogenation. Invertase catalyses breaking of sucrose to glucose and fructose.

The primary CO₂ acceptor in C₃ plants is Ribulose-1, 5-diphosphate (RuBP) which forms a 3 carbon compound 3-phosphoglyceric acid.

Correct Option: B

The primary CO₂ acceptor in C₃ plants is Ribulose-1, 5-diphosphate (RuBP) which forms a 3 carbon compound 3-phosphoglyceric acid.

Photorespiratory loss of CO₂ occurs when RUBISCO starts functioning as an oxygenase instead of carboxylase under conditions of high O₂ and low CO₂. It involves three organelles chloroplast, mitochondria and peroxisomes. Half of the photosynthetically fixed carbon (in the form of RUBP) may be lost into the atmosphere through this process and no ATP formation occurs.

Correct Option: A

Photorespiratory loss of CO₂ occurs when RUBISCO starts functioning as an oxygenase instead of carboxylase under conditions of high O₂ and low CO₂. It involves three organelles chloroplast, mitochondria and peroxisomes. Half of the photosynthetically fixed carbon (in the form of RUBP) may be lost into the atmosphere through this process and no ATP formation occurs.

In dark phase of calvin cycle of photosynthesis, the CO₂ is reduced to glucose in stroma of chloroplast, making use of the ATP & NADPH2, (available from light phase).

Correct Option: A

In dark phase of calvin cycle of photosynthesis, the CO₂ is reduced to glucose in stroma of chloroplast, making use of the ATP & NADPH2, (available from light phase).