1. | Maize | 2. | Sorghum |
3. | Sugarcane | 4. | Wheat |
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a. | They have a special type of leaf anatomy |
b. | They tolerate higher temperature |
c. | They show a response to high light intensities |
d. | They lack a process called photorespiration |
e. | They have greater productivity of biomass |
1. | All except [e] |
2. | [b], [c] and [d] only |
3. | All |
4. | [a], [b], [d] and [e] only |
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I: | The C4 acid OAA is formed in the mesophyll cells. |
II: | Malic acid or aspartic acid are transported to the bundle sheath cells. |
III: | C4 acids are broken down to release carbon dioxide and a 3 carbon molecule in mesophyll cells. |
IV: | The 3 carbon molecule is transported back to the bundle sheath cell where it is converted to PEP again. |
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I: | there is no synthesis of sugars |
II: | there is release of carbon dioxide with the utilization of ATP |
III: | ATP is synthesized but NADPH is not synthesized |
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Statement I: | In C4 plants, photorespiration does not occur. |
Statement II: | C4 plants do not have RuBisCO in any of their cells. |
1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
3. | Statement I is correct but Statement II is incorrect |
4. | Statement I is incorrect but Statement II is correct |
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Statement I: | Despite the presence of a green leaf, optimal light and carbon dioxide conditions, the plant may not photosynthesize if the temperature is very low. |
Statement II: | If a chemical process is affected by more than one factor, then its rate will be determined by the factor which is nearest to its minimal value. |
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Statement I: | Except for plants in shade or in dense forests, light is rarely a limiting factor in nature. |
Statement II: | There is a linear relationship between incident light and carbon dioxide fixation rates at low light intensities. |
1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
3. | Statement I is correct but Statement II is incorrect |
4. | Statement I is incorrect but Statement II is correct |
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Statement I: | Green house crops such as tomatoes and bell pepper are allowed to grow in carbon dioxide enriched atmosphere. This leads to higher yields. |
Statement II: | C3 plants respond to higher carbon dioxide concentration by showing increased rates of photosynthesis, leading to higher productivity. |
1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
3. | Statement I is correct but Statement II is incorrect |
4. | Statement I is incorrect but Statement II is correct |
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1. | 0.03 to 0.04 | 2. | 0.04 to 0.05 |
3. | 0.05 | 4. | more than 0.05 |
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