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Q. No.T.W Engelmann:
I:
described first absorption spectrum of photosynthesis.
ii:
first showed that it is only the green part of the plants that could release oxygen.
1.
Only I is correct
2.
Only II is correct
3.
Both I and II are correct
4.
Both I and II are incorrect
Subtopic: Historical View: Experiments |
From NCERT
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Membranous system consisting of grana in the chloroplast:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | is responsible for trapping the light energy. |
| II: | is responsible for the synthesis of ATP and NADPH. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Chloroplast Structure |
88%
From NCERT
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A chromatographic separation of the leaf pigments shows that the colour that we see in leaves is not due to a single pigment but due to four pigments. The colours, bright or blue green, in the chromatogram are associated with:
| 1. | Chlorophyll a | 2. | Chlorophyll b |
| 3. | Xanthophylls | 4. | Carotenoids |
Subtopic: Pigments |
92%
From NCERT
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Consider the two statements:
| Assertion (A): | Higher rate of photosynthesis is seen when plants are provided with blue and red regions of wavelengths of visible light. |
| Reason (R): | There is maximum absorption by chlorophyll a in the blue and the red regions of the visible light. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) explains (A) |
| 3. | Both (A) and (R) are True but (R) does not explain (A) |
| 4. | Both (A) and (R) are False |
Subtopic: Pigments |
91%
From NCERT
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In PS I the reaction centre chlorophyll a has an absorption peak at:
1. 400 nm
2. 430 nm
3. 680 nm
4. 700 nm
1. 400 nm
2. 430 nm
3. 680 nm
4. 700 nm
Subtopic: Light Reaction: Electron Transport |
94%
From NCERT
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The electrons that are moved from photosystem II are replaced by electron from:
1. PS I
2. Water
3. Glucose
4. Acetyl CoA
1. PS I
2. Water
3. Glucose
4. Acetyl CoA
Subtopic: Light Reaction: Electron Transport |
89%
From NCERT
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Consider the two statements:
| Assertion (A): | Cyclic photophosphorylation results only in the synthesis of ATP, but not of NADPH + H+. |
| Reason (R): | Cyclic photophosphorylation occurs only when light of wavelengths beyond 680 nm are available for excitation. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 4. | Both (A) and (R) are False |
Subtopic: Light Reaction: Electron Transport |
From NCERT
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Consider the two statements:
| Assertion(A): | The protons or hydrogen ions that are produced by the splitting of water accumulate within the lumen of the thylakoids. |
| Reason(R): | The primary accepter of electrons, which is located towards the outer side of the membrane, transfers its electron not to an electron carrier but to an H carrier. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) explains (A) |
| 3. | Both (A) and (R) are True but (R) does not explain (A) |
| 4. | Both (A) and (R) are False |
Subtopic: Chemiosmotic hypothesis |
62%
From NCERT
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The ATP synthase enzyme consists of two parts where:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | CF0 is embedded in the thylakoid membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane. |
| II: | CF1 protrudes on the outer surface of the thylakoid membrane on the side that faces the stroma. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Chemiosmotic hypothesis |
94%
From NCERT
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The products of light reaction of photosynthesis include all the following except:
1. ATP
2. NADPH
3. Glucose
4. O2
1. ATP
2. NADPH
3. Glucose
4. O2
Subtopic: WHERE ARE THE ATP AND NADPH USED |
87%
From NCERT
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