Q. No.Photosynthesis is important because:
I. It is the primary source of all food on earth.
II. It is responsible for the release of oxygen into the atmosphere by green plants.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
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| 1. | Joseph Priestley | 2. | Jan Ingenhousz |
| 3. | Julius von Sachs | 4. | C. B. Van Neil |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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| 1. | Joseph Priestley | 2. | Jan Ingenhousz |
| 3. | Julius von Sachs | 4. | C. B. Van Neil |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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I. production of glucose when plants grow
II. location of green substance in plants in special bodies
Which of the following will be true in light of the information given above?
A. Glucose produced during photosynthesis is usually stored as cellulose in plants.
B. The ‘green substance’ refers to chlorophyll.
C. ‘Special bodies’ refer to chloroplasts in the plant cells.
| 1. | Only A and B | 2. | Only B and C |
| 3. | Only A | 4. | A, B and C |
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| 1. | 6CO2 + 12H2O + light energy → C6H12O6 + 6O2+ 6H2O |
| 2. | 6CO2 + 6H2O + light energy → C6H12O6 + 6O2 |
| 3. | CO2 + H2O + light energy → [CH2O] + O2 |
| 4. | C6H12O6 + 6O2 → 6CO2 + 6H2O |
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| 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 |
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I: Carbon reactions during photosynthesis in higher plants are called as dark reactions.
II: They occur in darkness and they are not light-dependent.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
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I. include Carotenoids and Xanthophylls but not Chlorophyll b.
II. enable a wider range of wavelength of incoming light to be utilised for photosynthesis.
III. protect Chlorophyll a from photo-oxidation.
1. Only I and II are correct
2. Only I and III are correct
3. I, II and III are correct
4. Only II and III are correct
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1. Light absorption
2. Water splitting and oxygen release
3. Formation of ATP and NADPH
4. Fixation of carbon
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| COLUMN I | COLUMN II | ||
| A | Chlorophyll a | P | Bright or blue-green |
| B | Chlorophyll b | Q | Yellow-green |
| C | Xanthophylls | R | Yellow |
| D | Carotenoids | S | Yellow to yellow-orange |
Codes
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | R | S | P |
| 3. | R | S | P | Q |
| 4. | S | P | Q | R |
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