Photosynthesis in Higher Plants

Which of the following are required for the light reaction of Photosynthesis? Choose the correct answer from the options given below:

1. A, C, D and E only
2. C, D and E only
3. A and B only
4. A, C and E only

Which one of the following products diffuses out of the chloroplast during photosynthesis?

1. ADP
2. NADPH
3. O2
4. ATP

Observe the given figure. Identify the different stages labelled with alphabets by selecting the correct option. [figure]

1. A-Carboxylation, B-Regeneration, C-Reduction
2. A-Reduction, B-Decarboxylation, C-Regeneration
3. A-Carboxylation, B-Reduction, C-Regeneration
4. A-Reduction, B-Carboxylation, C-Regeneration

How many ATP and NADPH are required for the synthesis of one molecule of Glucose during Calvin cycle?

1. 18 ATP and 12 NADPH
2. 12 ATP and 16 NADPH
3. 18 ATP and 16 NADPH
4. 12 ATP and 12 NADPH

The reaction centre in PS II has an absorption maximum at

1. 700 nm
2. 660 nm
3. 780 nm
4. 680 nm

Which of the following combinations is required for chemiosmosis?

1. Membrane, proton pump, proton gradient, NADP synthase
2. Proton pump, electron gradient, ATP synthase
3. Proton pump, electron gradient, NADP synthase
4. Membrane, proton pump, proton gradient, ATP synthase

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below :

1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct

Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:

1. Breakdown of proton gradient
2. Breakdown of electron gradient
3. Movement of protons across the membrane to the stroma
4. Reduction of NADP to NADPH2 on the stroma side of the membrane

What is the role of large bundle sheath cells found around the vascular bundles in C4 plants?

1. To provide the site for photorespiratory pathway
2. To increase the number of chloroplast for the operation of Calvin cycle
3. To enable the plant to tolerate high temperature
4. To protect the vascular tissue from high light intensity

When one CO2 molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction phase?

1. 2 ATP + 2 NADPH
2. 1 ATP + 1 NADPH
3. 1 ATP + 2 NADPH
4. 2 ATP + 1 NADPH