Stroma in the chloroplasts of higher plants contains:
| 1. | light-independent reaction enzymes |
| 2. | light-dependent reaction enzymes |
| 3. | ribosomes |
| 4. | chlorophyll |
Subtopic: Â Chloroplast Structure |
 69%
AIPMT - 2009
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NEET 2026 - Target Batch - Vital
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In the chloroplast:
| Statement I: | The membrane system is the site of enzymatic reactions leading to synthesis of sugar. |
| Statement II: | The stroma is responsible for trapping the light energy and also for the synthesis of ATP and NADPH. |
| 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 |
Subtopic: Â Chloroplast Structure |
 61%
From NCERT
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| Assertion(A): | Synthesis of ATP and NADPH during photosynthesis is a part of the light reaction. |
| Reason(R): | These reactions are light-driven. |
| 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: Â Chloroplast Structure |Â Photosynthetic Pigments |
From NCERT
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Consider the two statements:
| Statement I: | Chloroplasts align perpendicular to the walls of mesophyll cells when intensity of light is minimum, to get more and more of light. |
| Statement II: | Chloroplasts align parallel to the walls of mesophyll cells when intensity of light is minimum, to get more and more of light. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Â Chloroplast Structure |
 61%
From NCERT
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Which alignment of chloroplasts in mesophyll cell will allow to get optimum quantity of the incident light?
| 1. | Away from the wall |
| 2. | Across the wall |
| 3. | Along the wall |
| 4. | Perpendicular to the wall |
Subtopic: Â Chloroplast Structure |
 70%
From NCERT
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The fluid component of chloroplast associated with
| 1. | Photochemical reactions |
| 2. | Light - dependent reactions |
| 3. | ATP - synthesizing reactions |
| 4. | Biosynthetic reactions |
Subtopic: Â Chloroplast Structure |
 54%
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Molecular formula of chlorophyll-b is
| 1. | \(\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}\) |
| 2. | \(\mathrm{C}_{55} \mathrm{H}_{72} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}\) |
| 3. | \(\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}\) |
| 4. | \(\mathrm{C}_{54} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}\) |
Subtopic: Â Chloroplast Structure |
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Membranous system consisting of grana in the chloroplast:
| 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: Â Chloroplast Structure |
 89%
From NCERT
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