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Q. No.What conclusions can be drawn from the Moll’s half leaf experiment [the given diagram shows the schematic representation of the experiment]?
What can be said after observing the results of the experiment?
I:
Negative starch test by the leaf portion present inside the bottle indicates CO 2 is necessary for this process.
II:
Negative test of starch, which is also shown by the portion of the leaf present in between the split of the split cork is due to the lack of CO 2 and light, thus indicating that both of them are essential requirements.
1.
Only I
2.
Only II
3.
Both I and II
4.
None
What can be said after observing the results of the experiment?
Subtopic: Historical View: Experiments |
65%
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C. B. van Niel proved that:
| 1. | Plants produce glucose when they grow. |
| 2. | Blue and red light are effective for photosynthesis. |
| 3. | It is only the green parts of the plants that could release oxygen. |
| 4. | Hydrogen from a suitable oxidizable compound reduces carbon dioxide to carbohydrates. |
Subtopic: Historical View: Experiments |
69%
From NCERT
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When do you think the chloroplasts will be aligned with their flat surfaces parallel to the walls of the mesophyll cells?
| 1. | In dark |
| 2. | When light intensity is low |
| 3. | When light intensity is high |
| 4. | They are always aligned parallel to the walls |
Subtopic: Chloroplast Structure |
56%
From NCERT
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It can be correctly said about the relation between the absorption spectra of various pigments and the action spectrum of photosynthesis that:
| 1. | There is a complete one to one overlap between the absorption spectrum of chlorophyll a and the action spectrum of photosynthesis. |
| 2. | There is a complete one to one overlap between the absorption spectrum of chlorophyll b and the action spectrum of photosynthesis. |
| 3. | The absorption spectrum of chlorophyll a is wider than the action spectrum of photosynthesis. |
| 4. | The absorption spectrum of chlorophyll a is narrower than the action spectrum of photosynthesis. |
Subtopic: Pigments |
From NCERT
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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 |
82%
From NCERT
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The electrons needed to replace those removed from PS I are provided by:
| 1. | The LHC | 2. | Water |
| 3. | NADPH | 4. | PS II |
Subtopic: Light Reaction: Electron Transport |
From NCERT
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Consider the following two statements and choose the correct response from the options given below:
| I: | Protons and oxygen formed by splitting of water are released in the lumen of thylakoid. |
| II: | PS II is physically located on the inner side of the membrane of the thylakoid. |
| 1. | Both I and II are true and II explains I |
| 2. | Both I and II are true but II does not explain I |
| 3. | I is true and II is false |
| 4. | I is false and II is true |
Subtopic: Light Reaction: Electron Transport |
54%
From NCERT
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The stroma lamellae membranes:
| 1. | have both PS II and NADP reductase enzyme |
| 2. | have PS II but not NADP reductase enzyme |
| 3. | lack PS II but have NADP reductase enzyme |
| 4. | lack both PS II and NADP reductase enzyme |
Subtopic: Light Reaction: Electron Transport |
77%
From NCERT
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The NADP reductase enzyme is located:
| 1. | within the thylakoid membrane |
| 2. | on the stroma side of the thylakoid membrane |
| 3. | on the lumen side of the thylakoid membrane |
| 4. | in the thylakoid lumen |
Subtopic: Chemiosmotic hypothesis |
79%
From NCERT
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The ATP synthase consists of two parts where:
| 1. | is a transmembrane channel and protrudes out towards stroma |
| 2. | is a transmembrane channel and protrudes out towards stroma |
| 3. | is a transmembrane channel and protrudes out towards lumen of thylakoid |
| 4. | is a transmembrane channel and protrudes out towards lumen of thylakoid |
Subtopic: Chemiosmotic hypothesis |
79%
From NCERT
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