The ‘light reaction’ of photosynthesis in higher plants does not include:
1. Light absorption
2. Water splitting and oxygen release
3. Formation of ATP and NADPH
4. Fixation of carbon
Subtopic:  Dark Reaction: Biosynthetic Phase | Light Reactions |
 89%
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What is true regarding PSI and PSII?
1. PS I works before PS II during the light reaction
2. A single chlorophyll a molecule makes the reaction center in both PS I and PS II
3. The reaction center of PS I is P680 and in PS II is P700
4. LHC is seen in PS I but not in PS II

Subtopic:  Light Reactions |
 78%
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The correct statements about photosynthesis include:
I. the light-dependent reactions can occur only in the light, the light-independent reactions only in the dark
II. photorespiration is more efficient at producing glucose than is photosynthesis
III. the light-dependent reactions produce the energy-rich compounds that are used to run the light-independent reactions

1. I only 2. III only
3. I and III only 4. II and III only
Subtopic:  Light Reaction: Electron Transport | Dark Reaction: Biosynthetic Phase | Light Reactions |
 80%
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The splitting of water during oxygenic photosynthesis in higher plants:
I. is associated with PS II
II. releases one molecule of oxygen on splitting of two water molecules
III. releases protons and oxygen in the thylakoid lumen
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic:  Light Reactions |
 74%
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