91Ó°ÊÓ

Assertion: Regeneration of \(\mathrm{CO}_{2}\) acceptor molecule RuBP is crucial if the cycle is to continue uninterrupted. Reason: The regeneration steps require one ATP for phosphorylation to form RuBP.

Assertion: \(\mathrm{C}_{4}\) photosynthetic pathway is more efficient than the \(\mathrm{C}_{3}\) pathway. Reason: Photorespiration is suppressed in \(\mathrm{C}_{4}\) plants.

Assertion: Accessory pigment helps to make photosynthesis more efficient. Reason: Accessory pigment helps to absorb different wavelengths of light.

Assertion: Photolysis of water occur on inner side of the membrane of thylakoid. Reason: Water splitting complex is associated with PSII which is physically located on inner side of thylakoid Membrane.

Assertion: Synthesis of ATP from ADP in chloroplast is called photophosphorylation. Reason: This phosphorylation in chloroplast occurs in presence of light.

Assertion: Proton produced by the splitting of water accumulate with in the lumen of thylakoid. Reason: Spitting of water molecule takes place on inner side of the membrane of thylakoid.

Assertion: Calvin cycle is referred as \(\mathrm{C}_{3}\) pathway Reason: In Calvin cycle the first product of \(\mathrm{CO}_{2}\) fixation is \(\mathrm{a} \mathrm{C}_{3}\) acid (PGA).

Assertion: To make one molecule of glucose 6 turns of the Calvin cycle required Reason: One turn of Calvin cycle fix one molecule of \(\mathrm{CO}_{2}\)

Assertion: Photorespiration is a wasteful process. Reason: It results in \(\mathrm{CO}_{2}\) release with the utilization of ATP and there is no synthesis of ATP or NADPH

Assertion: Light is rarely a limiting factor in most of plant. Reason: Light saturation occur at \(10 \%\) of the full sunlight.