Q. No.Consider the two statements:
Statement I:
Both the cilium and the flagellum emerge from centriole-like structure called the basal body.
Statement II:
Basal body, centrioles, cilia and flagella have identical arrangement of microtubules in their ultrastructure.
1.
Statement I is correct and Statement II is incorrect
2.
Both Statement I and Statement II are correct but Statement II does not explain Statement I
3.
Both Statement I and Statement II are correct and Statement II correctly explains Statement I
4.
Only Statement II is correct
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| 1. | it usually contains two cylindrical structures called centrioles |
| 2. | both centrioles in centrosome are parallel to each other |
| 3. | in centrioles, the peripheral fibril is a triplet |
| 4. | the central part of the proximal region of the centriole is a proteinaceous hub |
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| 1. | Robert Brown | 2. | Robert Hooke |
| 3. | Flemming | 4. | Rudolph Virchow |
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| I: | The content of nucleolus is continuous with the rest of the nucleoplasm. |
| II: | Nucleolus is the site for active ribosomal RNA synthesis. |
| 1. | I is correct and II is incorrect |
| 2. | Both I and II are correct but II does not explain I |
| 3. | Both I and II are correct and II correctly explains I |
| 4. | Only II is correct |
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| I: | Nuclear envelope consists of two parallel membranes with a perinuclear space between them. |
| II: | Nuclear pore is formed by the fusion of two nuclear membranes at points where they interrupt the nuclear envelope. |
| III: | Large and more numerous nucleoli are present in the cells actively carrying out protein synthesis. |
| 1. | Only I | 2. | Only II |
| 3. | Only III | 4. | None |
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| 1. | metacentric | 2. | sub-metacentric |
| 3. | acrocentric | 4. | telocentric |
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| 1. | DNA | 2. | Basic histones |
| 3. | Non-histone proteins | 4. | Polysachharides |
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| A. | Anton Von Leeuwenhoek | The first man to witness a live cell under a microscope |
| B. | Schleiden and Schwann | Proposed cell theory |
| C. | Rudolph Virchow | Proposed spontaneous generation of life |
| 1. | Only A and B | 2. | Only A and C |
| 3. | Only B and C | 4. | A, B and C |
| I: | 10-20 µm |
| II: | 0.2-2.0 µm |
| III: | About 10 µm |
| IV: | 1-2 µm |
| 1. | Only I and III | 2. | Only I and IV |
| 3. | Only II and III | 4. | Only I, II and IV |
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| A: | Fimbriae | B: | Cell wall |
| C: | Mesosome | D: | Plastid |
| 1. | Only A and B | 2. | Only B and D |
| 3. | Only B and C | 4. | Only A and D |
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