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Q. No.Match the scientists given in Column I with their contribution in understanding the process of photosynthesis in Column II and select the correct answer from the codes given below:
| COLUMN I | COLUMN II | ||
| (A) | Jan Ingenhousz | (a) | Only green parts of the plant are capable of photosynthesis |
| (B) | F. F. Blackman | (b) | Enzymes must carry out light independent reaction |
| (C) | C. B. van Neil | (c) | Oxygen comes from water and not from carbon dioxide |
| (D) | T. W. Engelmann | (d) | First action spectrum of photosynthesis |
Codes
| (A) | (B) | (C) | (D) | |
| 1. | (a) | (b) | (c) | (d) |
| 2. | (b) | (a) | (d) | (c) |
| 3. | (a) | (b) | (d) | (c) |
| 4. | (b) | (a) | (c) | (d) |
Subtopic: Historical View: Experiments |
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Consider the given two statements:
| Assertion (A): | The oxygen evolved during photosynthesis comes from water molecules, not from carbon dioxide. |
| Reason (R): | Oxygen evolving complex is associated with Photosystem I located on thylakoid membrane. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Historical View: Experiments | Photosystems |
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Consider the two statements:
| Statement I: | Jan Ingenhousz proposed that oxygen evolved in photosynthesis comes from water. |
| Statement II: | T.W. Engelmann described the first action spectrum of photosynthesis. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Historical View: Experiments |
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Match the Scientists given in Column I with their contribution in Column II and select the correct match from the codes given:
Codes
| Column I | Column II | ||
| A. | Jan Ingenhousz | P. | Provided evidence for production of glucose when plants grow |
| B. | T. W Engelmann | Q. | Described the first action spectrum for photosynthesis |
| C. | Julius von Sachs | R. | Showed that sunlight is essential for photosynthesis |
| D. | Cornelius van Neil | S. | Inferred that oxygen evolved in photosynthesis comes from water and not from carbon dioxide |
| A | B | C | D | |
| 1. | R | Q | P | S |
| 2. | Q | R | S | P |
| 3. | P | S | R | Q |
| 4. | S | P | Q | R |
Subtopic: Introduction | Historical View: Experiments |
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Identify the incorrect statement regarding photosynthesis in higher plants:
| 1. | Chlorophyll a is the chief pigment associated with photosynthesis. |
| 2. | Splitting of water is associated with PS II |
| 3. | Cyclic flow of electrons results only in the synthesis of NADH |
| 4. | Biosynthetic phase is dependent on the products of the light reaction |
Subtopic: Photosynthetic Pigments |
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Consider the given two statements:
Choose the correct option.
| Assertion (A): | Light reaction of photosynthesis involves the photolysis of water. |
| Reason (R): | The photolysis of water is essential for the release of oxygen and the production of ATP and NADPH. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Light Reaction: Electron Transport |
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Consider the given two statements:
| Assertion (A): | The splitting of water is essential for the light reactions of photosynthesis |
| Reason (R): | The electrons released during the splitting of water are used to replace those lost by chlorophyll a. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Light Reaction: Electron Transport |
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Consider the following statements:
| I: | The reaction centre chlorophyll a in PS I is called P700 |
| II: | Oxygen evolving complex is associated with PS II |
| III. | Both ATP and NADPH are made during cyclic photophosphorylation |
| 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: Photosystems | Light Reaction: Electron Transport |
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Consider the given two statements:
| Assertion (A): | The protons and O2 formed by photolysis of water are released in the thylakoid lumen. |
| Reason (R): | The water splitting complex is associated with the PS I, which itself is physically located on the outer side of the membrane of the thylakoid. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Chemiosmotic hypothesis |
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Consider the two statements:
| Statement I: | Photosynthesis involves two sets of reactions known as the light-dependent reactions and the light-independent reactions. |
| Statement II: | The thylakoid membrane contains enzymes that participate in photosynthesis. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is correct; Statement II is correct |
Subtopic: Photosystems |
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