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Q. No.How do plants carry out gas exchange without specialized respiratory organs?
| 1. | They use vascular tissues to transport gases. |
| 2. | Only photosynthetic cells require gas exchange, which occurs through the cuticle. |
| 3. | Gas exchange occurs only in leaves and not in stems or roots. |
| 4. | Gas exchange occurs through stomata and lenticels, and most cells are close to the surface. |
Subtopic: Introduction |
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Respiratory substrate are the compounds
| 1. | Which get oxidized during Respiration |
| 2. | Which get hydrolysed during Respiration |
| 3. | Which get reduced during Respiration |
| 4. | Which catalyze the process of Respiration |
Subtopic: Introduction |
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The energy in Respiration is
| 1. | Released in a single step |
| 2. | Released in multiple step processes and is trapped in the form of ADP |
| 3. | Released in step wise reactions controlled by ribozymes |
| 4. | Released in step wise reactions controlled by enzymes and is trapped as ATP |
Subtopic: Introduction |
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Consider the given two statements:
| Assertion (A): | ATP acts as the energy currency of the cell. |
| Reason (R): | ATP hydrolysis releases energy that can be used for various cellular processes. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Introduction |
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| Assertion(A): | Food has to be translocated to all non green parts of plants. |
| Reason(R): | Non-green parts do not photosynthesize. |
Choices for Assertions and reasons:
| 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: Introduction |
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Respiration is
| 1. | Breaking of a type of bonds like ionic or non ionic of complex compounds through oxidation within the cell by utilizing bulk of energy |
| 2. | Breaking of C-C bonds of simple molecules through hydrolysis within the cell by releasing energy |
| 3. | Breaking of C-C bonds of complex molecules through oxidation within the cell to release considerable amount of energy |
| 4. | Breaking of C-C bonds of complex molecules through hydrolysis within the cell by releasing energy |
Subtopic: Introduction |
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Which of the following act as respiratory substrate under certain conditions in the plant?
| 1. | Protein | 2. | Organic Acid |
| 3. | Fats | 4. | All of these |
Subtopic: Introduction |
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What is the relationship between photosynthesis and cellular respiration?
| 1. | Both processes produce oxygen. |
| 2. | Cellular respiration uses glucose and oxygen made by photosynthesis to release energy. |
| 3. | Photosynthesis and respiration are entirely independent. |
| 4. | Cellular respiration stops when photosynthesis occurs. |
Subtopic: Introduction |
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Which of the following features enables efficient gas exchange within a plant’s internal structure, even in large and woody tissues?
| 1. | Specialized root hairs that channel gases internally |
| 2. | Lenticels and loosely packed parenchyma cells in leaves, stems, and roots |
| 3. | Mechanical support cells that are adapted to oxygen storage |
| 4. | Large internal air chambers connected through the xylem vessels |
Subtopic: Introduction |
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What is the role of ATP in cellular respiration?
| 1. | It directly provides energy to the cell during oxidation. |
| 2. | It acts as the energy currency, storing energy released during oxidation for later use. |
| 3. | It oxidises glucose to release energy. |
| 4. | It is the primary respiratory substrate. |
Subtopic: Introduction |
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